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Finding the Fourth Proportional to 437,691.39, 656,290.83 and 138,116.13

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Solution

The fourth proportional to 437,691.39, 656,290.83 and 138,116.13 is: 207,096.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,691.39 : 656,290.83 = 138,116.13 : x
  2. Step 2: Convert to fraction form
    437,691.39/656,290.83 = 138,116.13/x
  3. Step 3: Cross multiply
    437,691.39x = 656,290.83 × 138,116.13
  4. Step 4: Simplify right side
    437,691.39x = 90,644,349,594.09
  5. Step 5: Solve for x
    x = 90,644,349,594.09/437,691.39
  6. Step 6: Final answer
    x = 207,096.49

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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.