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Finding the Fourth Proportional to 230,687.70, 345,999.15 and 72,932.10

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Solution

The fourth proportional to 230,687.70, 345,999.15 and 72,932.10 is: 109,387.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,687.70 : 345,999.15 = 72,932.10 : x
  2. Step 2: Convert to fraction form
    230,687.70/345,999.15 = 72,932.10/x
  3. Step 3: Cross multiply
    230,687.70x = 345,999.15 × 72,932.10
  4. Step 4: Simplify right side
    230,687.70x = 25,234,444,607.72
  5. Step 5: Solve for x
    x = 25,234,444,607.72/230,687.70
  6. Step 6: Final answer
    x = 109,387.91

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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.