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Finding the Fourth Proportional to 268,414.20, 402,672.10 and 88,509.96

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Solution

The fourth proportional to 268,414.20, 402,672.10 and 88,509.96 is: 132,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,414.20 : 402,672.10 = 88,509.96 : x
  2. Step 2: Convert to fraction form
    268,414.20/402,672.10 = 88,509.96/x
  3. Step 3: Cross multiply
    268,414.20x = 402,672.10 × 88,509.96
  4. Step 4: Simplify right side
    268,414.20x = 35,640,491,464.12
  5. Step 5: Solve for x
    x = 35,640,491,464.12/268,414.20
  6. Step 6: Final answer
    x = 132,781.69

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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.