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Finding the Fourth Proportional to 316,517.56, 474,759.78 and 79,862.44

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Solution

The fourth proportional to 316,517.56, 474,759.78 and 79,862.44 is: 119,789.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,517.56 : 474,759.78 = 79,862.44 : x
  2. Step 2: Convert to fraction form
    316,517.56/474,759.78 = 79,862.44/x
  3. Step 3: Cross multiply
    316,517.56x = 474,759.78 × 79,862.44
  4. Step 4: Simplify right side
    316,517.56x = 37,915,474,444.66
  5. Step 5: Solve for x
    x = 37,915,474,444.66/316,517.56
  6. Step 6: Final answer
    x = 119,789.48

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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.