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Finding the Fourth Proportional to 252,549.20, 378,820.56 and 72,639.02

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Solution

The fourth proportional to 252,549.20, 378,820.56 and 72,639.02 is: 108,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,549.20 : 378,820.56 = 72,639.02 : x
  2. Step 2: Convert to fraction form
    252,549.20/378,820.56 = 72,639.02/x
  3. Step 3: Cross multiply
    252,549.20x = 378,820.56 × 72,639.02
  4. Step 4: Simplify right side
    252,549.20x = 27,517,154,234.25
  5. Step 5: Solve for x
    x = 27,517,154,234.25/252,549.20
  6. Step 6: Final answer
    x = 108,957.60

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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.