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Finding the Fourth Proportional to 378,288.52, 567,515.84 and 112,069.88

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Solution

The fourth proportional to 378,288.52, 567,515.84 and 112,069.88 is: 168,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,288.52 : 567,515.84 = 112,069.88 : x
  2. Step 2: Convert to fraction form
    378,288.52/567,515.84 = 112,069.88/x
  3. Step 3: Cross multiply
    378,288.52x = 567,515.84 × 112,069.88
  4. Step 4: Simplify right side
    378,288.52x = 63,601,432,086.90
  5. Step 5: Solve for x
    x = 63,601,432,086.90/378,288.52
  6. Step 6: Final answer
    x = 168,129.43

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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.