Home / 327,579.42-491,489.28-138,087.48

Finding the Fourth Proportional to 327,579.42, 491,489.28 and 138,087.48

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Solution

The fourth proportional to 327,579.42, 491,489.28 and 138,087.48 is: 207,181.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,579.42 : 491,489.28 = 138,087.48 : x
  2. Step 2: Convert to fraction form
    327,579.42/491,489.28 = 138,087.48/x
  3. Step 3: Cross multiply
    327,579.42x = 491,489.28 × 138,087.48
  4. Step 4: Simplify right side
    327,579.42x = 67,868,516,122.21
  5. Step 5: Solve for x
    x = 67,868,516,122.21/327,579.42
  6. Step 6: Final answer
    x = 207,181.87

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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.