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Finding the Fourth Proportional to 252,302.52, 378,343.89 and 72,348.18

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Solution

The fourth proportional to 252,302.52, 378,343.89 and 72,348.18 is: 108,490.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,302.52 : 378,343.89 = 72,348.18 : x
  2. Step 2: Convert to fraction form
    252,302.52/378,343.89 = 72,348.18/x
  3. Step 3: Cross multiply
    252,302.52x = 378,343.89 × 72,348.18
  4. Step 4: Simplify right side
    252,302.52x = 27,372,491,855.62
  5. Step 5: Solve for x
    x = 27,372,491,855.62/252,302.52
  6. Step 6: Final answer
    x = 108,490.76

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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.