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Finding the Fourth Proportional to 327,355.55, 490,617 and 147,248.43

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Solution

The fourth proportional to 327,355.55, 490,617 and 147,248.43 is: 220,685.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,355.55 : 490,617 = 147,248.43 : x
  2. Step 2: Convert to fraction form
    327,355.55/490,617 = 147,248.43/x
  3. Step 3: Cross multiply
    327,355.55x = 490,617 × 147,248.43
  4. Step 4: Simplify right side
    327,355.55x = 72,242,583,901.22
  5. Step 5: Solve for x
    x = 72,242,583,901.22/327,355.55
  6. Step 6: Final answer
    x = 220,685.38

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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.