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Finding the Fourth Proportional to 493,387.28, 680,874.42 and 267,032.78

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Solution

The fourth proportional to 493,387.28, 680,874.42 and 267,032.78 is: 368,505.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,387.28 : 680,874.42 = 267,032.78 : x
  2. Step 2: Convert to fraction form
    493,387.28/680,874.42 = 267,032.78/x
  3. Step 3: Cross multiply
    493,387.28x = 680,874.42 × 267,032.78
  4. Step 4: Simplify right side
    493,387.28x = 181,815,789,203.49
  5. Step 5: Solve for x
    x = 181,815,789,203.49/493,387.28
  6. Step 6: Final answer
    x = 368,505.22

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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.