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Finding the Fourth Proportional to 285,841.52, 394,443.24 and 158,517.20

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Solution

The fourth proportional to 285,841.52, 394,443.24 and 158,517.20 is: 218,743.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,841.52 : 394,443.24 = 158,517.20 : x
  2. Step 2: Convert to fraction form
    285,841.52/394,443.24 = 158,517.20/x
  3. Step 3: Cross multiply
    285,841.52x = 394,443.24 × 158,517.20
  4. Step 4: Simplify right side
    285,841.52x = 62,526,037,963.73
  5. Step 5: Solve for x
    x = 62,526,037,963.73/285,841.52
  6. Step 6: Final answer
    x = 218,743.72

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1.5x scale

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.