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Finding the Fourth Proportional to 327,447.20, 491,170.80 and 288,081.20

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Solution

The fourth proportional to 327,447.20, 491,170.80 and 288,081.20 is: 432,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,447.20 : 491,170.80 = 288,081.20 : x
  2. Step 2: Convert to fraction form
    327,447.20/491,170.80 = 288,081.20/x
  3. Step 3: Cross multiply
    327,447.20x = 491,170.80 × 288,081.20
  4. Step 4: Simplify right side
    327,447.20x = 141,497,073,468.96
  5. Step 5: Solve for x
    x = 141,497,073,468.96/327,447.20
  6. Step 6: Final answer
    x = 432,121.80

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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.