Home / 278,454,816.48-415,638,261.78-257,934,108

Finding the Fourth Proportional to 278,454,816.48, 415,638,261.78 and 257,934,108

Calculator

Solution

The fourth proportional to 278,454,816.48, 415,638,261.78 and 257,934,108 is: 385,007,828.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,454,816.48 : 415,638,261.78 = 257,934,108 : x
  2. Step 2: Convert to fraction form
    278,454,816.48/415,638,261.78 = 257,934,108/x
  3. Step 3: Cross multiply
    278,454,816.48x = 415,638,261.78 × 257,934,108
  4. Step 4: Simplify right side
    278,454,816.48x = 107,207,284,302,894,784
  5. Step 5: Solve for x
    x = 107,207,284,302,894,784/278,454,816.48
  6. Step 6: Final answer
    x = 385,007,828.77

Related Problems

Find fourth proportional to 139,227,408.24, 207,819,130.89 and 128,967,054
Half scale
Find fourth proportional to 556,909,632.96, 831,276,523.56 and 515,868,216
Double scale
Find fourth proportional to 278,454,817.48, 415,638,263.27 and 257,934,109
Similar ratio
Find fourth proportional to 417,682,224.72, 623,457,392.67 and 386,901,162
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.