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Finding the Fourth Proportional to 327,958.80, 491,938.20 and 291,217.20

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Solution

The fourth proportional to 327,958.80, 491,938.20 and 291,217.20 is: 436,825.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,958.80 : 491,938.20 = 291,217.20 : x
  2. Step 2: Convert to fraction form
    327,958.80/491,938.20 = 291,217.20/x
  3. Step 3: Cross multiply
    327,958.80x = 491,938.20 × 291,217.20
  4. Step 4: Simplify right side
    327,958.80x = 143,260,865,177.04
  5. Step 5: Solve for x
    x = 143,260,865,177.04/327,958.80
  6. Step 6: Final answer
    x = 436,825.80

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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.