Home / 260,077.05-390,212.78-102,415.41

Finding the Fourth Proportional to 260,077.05, 390,212.78 and 102,415.41

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Solution

The fourth proportional to 260,077.05, 390,212.78 and 102,415.41 is: 153,661.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,077.05 : 390,212.78 = 102,415.41 : x
  2. Step 2: Convert to fraction form
    260,077.05/390,212.78 = 102,415.41/x
  3. Step 3: Cross multiply
    260,077.05x = 390,212.78 × 102,415.41
  4. Step 4: Simplify right side
    260,077.05x = 39,963,801,850.94
  5. Step 5: Solve for x
    x = 39,963,801,850.94/260,077.05
  6. Step 6: Final answer
    x = 153,661.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.