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Finding the Fourth Proportional to 327,901.20, 490,930.20 and 318,685.20

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Solution

The fourth proportional to 327,901.20, 490,930.20 and 318,685.20 is: 477,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,901.20 : 490,930.20 = 318,685.20 : x
  2. Step 2: Convert to fraction form
    327,901.20/490,930.20 = 318,685.20/x
  3. Step 3: Cross multiply
    327,901.20x = 490,930.20 × 318,685.20
  4. Step 4: Simplify right side
    327,901.20x = 156,452,188,973.04
  5. Step 5: Solve for x
    x = 156,452,188,973.04/327,901.20
  6. Step 6: Final answer
    x = 477,132.10

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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.