Home / 380,816.50-525,526.77-211,061.56

Finding the Fourth Proportional to 380,816.50, 525,526.77 and 211,061.56

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Solution

The fourth proportional to 380,816.50, 525,526.77 and 211,061.56 is: 291,264.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,816.50 : 525,526.77 = 211,061.56 : x
  2. Step 2: Convert to fraction form
    380,816.50/525,526.77 = 211,061.56/x
  3. Step 3: Cross multiply
    380,816.50x = 525,526.77 × 211,061.56
  4. Step 4: Simplify right side
    380,816.50x = 110,918,499,897.96
  5. Step 5: Solve for x
    x = 110,918,499,897.96/380,816.50
  6. Step 6: Final answer
    x = 291,264.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.