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Finding the Fourth Proportional to 268,540, 402,724 and 88,585.15

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Solution

The fourth proportional to 268,540, 402,724 and 88,585.15 is: 132,849.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,540 : 402,724 = 88,585.15 : x
  2. Step 2: Convert to fraction form
    268,540/402,724 = 88,585.15/x
  3. Step 3: Cross multiply
    268,540x = 402,724 × 88,585.15
  4. Step 4: Simplify right side
    268,540x = 35,675,365,948.60
  5. Step 5: Solve for x
    x = 35,675,365,948.60/268,540
  6. Step 6: Final answer
    x = 132,849.36

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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.