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Finding the Fourth Proportional to 493,972.28, 681,685 and 267,617.78

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Solution

The fourth proportional to 493,972.28, 681,685 and 267,617.78 is: 369,314.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,972.28 : 681,685 = 267,617.78 : x
  2. Step 2: Convert to fraction form
    493,972.28/681,685 = 267,617.78/x
  3. Step 3: Cross multiply
    493,972.28x = 681,685 × 267,617.78
  4. Step 4: Simplify right side
    493,972.28x = 182,431,026,359.30
  5. Step 5: Solve for x
    x = 182,431,026,359.30/493,972.28
  6. Step 6: Final answer
    x = 369,314.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.