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Finding the Fourth Proportional to 654,344.88, 981,517.92 and 205,100.88

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Solution

The fourth proportional to 654,344.88, 981,517.92 and 205,100.88 is: 307,651.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,344.88 : 981,517.92 = 205,100.88 : x
  2. Step 2: Convert to fraction form
    654,344.88/981,517.92 = 205,100.88/x
  3. Step 3: Cross multiply
    654,344.88x = 981,517.92 × 205,100.88
  4. Step 4: Simplify right side
    654,344.88x = 201,310,189,127.77
  5. Step 5: Solve for x
    x = 201,310,189,127.77/654,344.88
  6. Step 6: Final answer
    x = 307,651.51

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Double scale
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Similar ratio
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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.