Home / 327,686.10-491,720.19-138,134.85

Finding the Fourth Proportional to 327,686.10, 491,720.19 and 138,134.85

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Solution

The fourth proportional to 327,686.10, 491,720.19 and 138,134.85 is: 207,282.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,686.10 : 491,720.19 = 138,134.85 : x
  2. Step 2: Convert to fraction form
    327,686.10/491,720.19 = 138,134.85/x
  3. Step 3: Cross multiply
    327,686.10x = 491,720.19 × 138,134.85
  4. Step 4: Simplify right side
    327,686.10x = 67,923,694,687.62
  5. Step 5: Solve for x
    x = 67,923,694,687.62/327,686.10
  6. Step 6: Final answer
    x = 207,282.81

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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.