Home / 327,721.35-491,649.45-138,182.28

Finding the Fourth Proportional to 327,721.35, 491,649.45 and 138,182.28

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Solution

The fourth proportional to 327,721.35, 491,649.45 and 138,182.28 is: 207,301.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,721.35 : 491,649.45 = 138,182.28 : x
  2. Step 2: Convert to fraction form
    327,721.35/491,649.45 = 138,182.28/x
  3. Step 3: Cross multiply
    327,721.35x = 491,649.45 × 138,182.28
  4. Step 4: Simplify right side
    327,721.35x = 67,937,241,961.75
  5. Step 5: Solve for x
    x = 67,937,241,961.75/327,721.35
  6. Step 6: Final answer
    x = 207,301.85

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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.