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Finding the Fourth Proportional to 225,719.27, 338,689.85 and 90,777.95

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Solution

The fourth proportional to 225,719.27, 338,689.85 and 90,777.95 is: 136,211.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,719.27 : 338,689.85 = 90,777.95 : x
  2. Step 2: Convert to fraction form
    225,719.27/338,689.85 = 90,777.95/x
  3. Step 3: Cross multiply
    225,719.27x = 338,689.85 × 90,777.95
  4. Step 4: Simplify right side
    225,719.27x = 30,745,568,121.47
  5. Step 5: Solve for x
    x = 30,745,568,121.47/225,719.27
  6. Step 6: Final answer
    x = 136,211.54

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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.