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Finding the Fourth Proportional to 331,375.75, 496,759.90 and 129,108.33

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Solution

The fourth proportional to 331,375.75, 496,759.90 and 129,108.33 is: 193,544.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,375.75 : 496,759.90 = 129,108.33 : x
  2. Step 2: Convert to fraction form
    331,375.75/496,759.90 = 129,108.33/x
  3. Step 3: Cross multiply
    331,375.75x = 496,759.90 × 129,108.33
  4. Step 4: Simplify right side
    331,375.75x = 64,135,841,099.97
  5. Step 5: Solve for x
    x = 64,135,841,099.97/331,375.75
  6. Step 6: Final answer
    x = 193,544.16

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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.