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Finding the Fourth Proportional to 327,062.80, 490,229.70 and 127,316.80

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Solution

The fourth proportional to 327,062.80, 490,229.70 and 127,316.80 is: 190,833.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,062.80 : 490,229.70 = 127,316.80 : x
  2. Step 2: Convert to fraction form
    327,062.80/490,229.70 = 127,316.80/x
  3. Step 3: Cross multiply
    327,062.80x = 490,229.70 × 127,316.80
  4. Step 4: Simplify right side
    327,062.80x = 62,414,476,668.96
  5. Step 5: Solve for x
    x = 62,414,476,668.96/327,062.80
  6. Step 6: Final answer
    x = 190,833.31

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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.