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Finding the Fourth Proportional to 327,244.80, 490,867.20 and 321,715.20

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Solution

The fourth proportional to 327,244.80, 490,867.20 and 321,715.20 is: 482,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,244.80 : 490,867.20 = 321,715.20 : x
  2. Step 2: Convert to fraction form
    327,244.80/490,867.20 = 321,715.20/x
  3. Step 3: Cross multiply
    327,244.80x = 490,867.20 × 321,715.20
  4. Step 4: Simplify right side
    327,244.80x = 157,919,439,421.44
  5. Step 5: Solve for x
    x = 157,919,439,421.44/327,244.80
  6. Step 6: Final answer
    x = 482,572.80

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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.