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Finding the Fourth Proportional to 252,042.73, 378,064.10 and 74,535.92

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Solution

The fourth proportional to 252,042.73, 378,064.10 and 74,535.92 is: 111,803.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,042.73 : 378,064.10 = 74,535.92 : x
  2. Step 2: Convert to fraction form
    252,042.73/378,064.10 = 74,535.92/x
  3. Step 3: Cross multiply
    252,042.73x = 378,064.10 × 74,535.92
  4. Step 4: Simplify right side
    252,042.73x = 28,179,353,249.47
  5. Step 5: Solve for x
    x = 28,179,353,249.47/252,042.73
  6. Step 6: Final answer
    x = 111,803.87

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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.