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Finding the Fourth Proportional to 437,499.10, 656,248.65 and 156,979.90

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Solution

The fourth proportional to 437,499.10, 656,248.65 and 156,979.90 is: 235,469.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,499.10 : 656,248.65 = 156,979.90 : x
  2. Step 2: Convert to fraction form
    437,499.10/656,248.65 = 156,979.90/x
  3. Step 3: Cross multiply
    437,499.10x = 656,248.65 × 156,979.90
  4. Step 4: Simplify right side
    437,499.10x = 103,017,847,452.14
  5. Step 5: Solve for x
    x = 103,017,847,452.14/437,499.10
  6. Step 6: Final answer
    x = 235,469.85

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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.