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Finding the Fourth Proportional to 327,775.80, 491,318.10 and 187,231.80

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Solution

The fourth proportional to 327,775.80, 491,318.10 and 187,231.80 is: 280,650.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,775.80 : 491,318.10 = 187,231.80 : x
  2. Step 2: Convert to fraction form
    327,775.80/491,318.10 = 187,231.80/x
  3. Step 3: Cross multiply
    327,775.80x = 491,318.10 × 187,231.80
  4. Step 4: Simplify right side
    327,775.80x = 91,990,372,235.58
  5. Step 5: Solve for x
    x = 91,990,372,235.58/327,775.80
  6. Step 6: Final answer
    x = 280,650.29

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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.