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Finding the Fourth Proportional to 327,195.70, 490,793.55 and 90,538.38

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Solution

The fourth proportional to 327,195.70, 490,793.55 and 90,538.38 is: 135,807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,195.70 : 490,793.55 = 90,538.38 : x
  2. Step 2: Convert to fraction form
    327,195.70/490,793.55 = 90,538.38/x
  3. Step 3: Cross multiply
    327,195.70x = 490,793.55 × 90,538.38
  4. Step 4: Simplify right side
    327,195.70x = 44,435,654,736.20
  5. Step 5: Solve for x
    x = 44,435,654,736.20/327,195.70
  6. Step 6: Final answer
    x = 135,807.57

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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.