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Finding the Fourth Proportional to 376,487.20, 564,800.73 and 123,781.78

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Solution

The fourth proportional to 376,487.20, 564,800.73 and 123,781.78 is: 185,695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,487.20 : 564,800.73 = 123,781.78 : x
  2. Step 2: Convert to fraction form
    376,487.20/564,800.73 = 123,781.78/x
  3. Step 3: Cross multiply
    376,487.20x = 564,800.73 × 123,781.78
  4. Step 4: Simplify right side
    376,487.20x = 69,912,039,704.70
  5. Step 5: Solve for x
    x = 69,912,039,704.70/376,487.20
  6. Step 6: Final answer
    x = 185,695.66

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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.