Home / 431,531.15-647,273.25-132,011.73

Finding the Fourth Proportional to 431,531.15, 647,273.25 and 132,011.73

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Solution

The fourth proportional to 431,531.15, 647,273.25 and 132,011.73 is: 198,010.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,531.15 : 647,273.25 = 132,011.73 : x
  2. Step 2: Convert to fraction form
    431,531.15/647,273.25 = 132,011.73/x
  3. Step 3: Cross multiply
    431,531.15x = 647,273.25 × 132,011.73
  4. Step 4: Simplify right side
    431,531.15x = 85,447,661,515.22
  5. Step 5: Solve for x
    x = 85,447,661,515.22/431,531.15
  6. Step 6: Final answer
    x = 198,010.42

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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.