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Finding the Fourth Proportional to 252,304.57, 378,529.91 and 74,815.85

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Solution

The fourth proportional to 252,304.57, 378,529.91 and 74,815.85 is: 112,245.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,304.57 : 378,529.91 = 74,815.85 : x
  2. Step 2: Convert to fraction form
    252,304.57/378,529.91 = 74,815.85/x
  3. Step 3: Cross multiply
    252,304.57x = 378,529.91 × 74,815.85
  4. Step 4: Simplify right side
    252,304.57x = 28,320,036,592.99
  5. Step 5: Solve for x
    x = 28,320,036,592.99/252,304.57
  6. Step 6: Final answer
    x = 112,245.44

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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.