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Finding the Fourth Proportional to 437,859.44, 656,785.28 and 138,340.04

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Solution

The fourth proportional to 437,859.44, 656,785.28 and 138,340.04 is: 207,508.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,859.44 : 656,785.28 = 138,340.04 : x
  2. Step 2: Convert to fraction form
    437,859.44/656,785.28 = 138,340.04/x
  3. Step 3: Cross multiply
    437,859.44x = 656,785.28 × 138,340.04
  4. Step 4: Simplify right side
    437,859.44x = 90,859,701,906.61
  5. Step 5: Solve for x
    x = 90,859,701,906.61/437,859.44
  6. Step 6: Final answer
    x = 207,508.83

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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.