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Finding the Fourth Proportional to 472,279.90, 708,419.85 and 156,747.10

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Solution

The fourth proportional to 472,279.90, 708,419.85 and 156,747.10 is: 235,120.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,279.90 : 708,419.85 = 156,747.10 : x
  2. Step 2: Convert to fraction form
    472,279.90/708,419.85 = 156,747.10/x
  3. Step 3: Cross multiply
    472,279.90x = 708,419.85 × 156,747.10
  4. Step 4: Simplify right side
    472,279.90x = 111,042,757,069.94
  5. Step 5: Solve for x
    x = 111,042,757,069.94/472,279.90
  6. Step 6: Final answer
    x = 235,120.65

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Similar ratio
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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.