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Finding the Fourth Proportional to 327,619.20, 491,428.80 and 194,430.90

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Solution

The fourth proportional to 327,619.20, 491,428.80 and 194,430.90 is: 291,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,619.20 : 491,428.80 = 194,430.90 : x
  2. Step 2: Convert to fraction form
    327,619.20/491,428.80 = 194,430.90/x
  3. Step 3: Cross multiply
    327,619.20x = 491,428.80 × 194,430.90
  4. Step 4: Simplify right side
    327,619.20x = 95,548,943,869.92
  5. Step 5: Solve for x
    x = 95,548,943,869.92/327,619.20
  6. Step 6: Final answer
    x = 291,646.35

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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.