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Finding the Fourth Proportional to 327,889.78, 491,569.44 and 138,227.56

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Solution

The fourth proportional to 327,889.78, 491,569.44 and 138,227.56 is: 207,229.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,889.78 : 491,569.44 = 138,227.56 : x
  2. Step 2: Convert to fraction form
    327,889.78/491,569.44 = 138,227.56/x
  3. Step 3: Cross multiply
    327,889.78x = 491,569.44 × 138,227.56
  4. Step 4: Simplify right side
    327,889.78x = 67,948,444,261.77
  5. Step 5: Solve for x
    x = 67,948,444,261.77/327,889.78
  6. Step 6: Final answer
    x = 207,229.53

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1.5x scale

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.