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Finding the Fourth Proportional to 439,793.28, 659,691.36 and 187,037.76

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Solution

The fourth proportional to 439,793.28, 659,691.36 and 187,037.76 is: 280,557.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,793.28 : 659,691.36 = 187,037.76 : x
  2. Step 2: Convert to fraction form
    439,793.28/659,691.36 = 187,037.76/x
  3. Step 3: Cross multiply
    439,793.28x = 659,691.36 × 187,037.76
  4. Step 4: Simplify right side
    439,793.28x = 123,387,194,265.75
  5. Step 5: Solve for x
    x = 123,387,194,265.75/439,793.28
  6. Step 6: Final answer
    x = 280,557.25

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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.