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Finding the Fourth Proportional to 327,634.20, 491,451.30 and 90,979.20

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Solution

The fourth proportional to 327,634.20, 491,451.30 and 90,979.20 is: 136,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,634.20 : 491,451.30 = 90,979.20 : x
  2. Step 2: Convert to fraction form
    327,634.20/491,451.30 = 90,979.20/x
  3. Step 3: Cross multiply
    327,634.20x = 491,451.30 × 90,979.20
  4. Step 4: Simplify right side
    327,634.20x = 44,711,846,112.96
  5. Step 5: Solve for x
    x = 44,711,846,112.96/327,634.20
  6. Step 6: Final answer
    x = 136,468.80

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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.