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Finding the Fourth Proportional to 472,691.35, 708,929.04 and 135,729.32

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Solution

The fourth proportional to 472,691.35, 708,929.04 and 135,729.32 is: 203,562.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,691.35 : 708,929.04 = 135,729.32 : x
  2. Step 2: Convert to fraction form
    472,691.35/708,929.04 = 135,729.32/x
  3. Step 3: Cross multiply
    472,691.35x = 708,929.04 × 135,729.32
  4. Step 4: Simplify right side
    472,691.35x = 96,222,456,334.30
  5. Step 5: Solve for x
    x = 96,222,456,334.30/472,691.35
  6. Step 6: Final answer
    x = 203,562.97

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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.