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Finding the Fourth Proportional to 327,198.92, 490,809.34 and 90,521.78

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Solution

The fourth proportional to 327,198.92, 490,809.34 and 90,521.78 is: 135,785.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,198.92 : 490,809.34 = 90,521.78 : x
  2. Step 2: Convert to fraction form
    327,198.92/490,809.34 = 90,521.78/x
  3. Step 3: Cross multiply
    327,198.92x = 490,809.34 × 90,521.78
  4. Step 4: Simplify right side
    327,198.92x = 44,428,935,097.43
  5. Step 5: Solve for x
    x = 44,428,935,097.43/327,198.92
  6. Step 6: Final answer
    x = 135,785.70

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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.