Home / 206,743.68-285,443.20-158,908.80

Finding the Fourth Proportional to 206,743.68, 285,443.20 and 158,908.80

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Solution

The fourth proportional to 206,743.68, 285,443.20 and 158,908.80 is: 219,399.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,743.68 : 285,443.20 = 158,908.80 : x
  2. Step 2: Convert to fraction form
    206,743.68/285,443.20 = 158,908.80/x
  3. Step 3: Cross multiply
    206,743.68x = 285,443.20 × 158,908.80
  4. Step 4: Simplify right side
    206,743.68x = 45,359,436,380.16
  5. Step 5: Solve for x
    x = 45,359,436,380.16/206,743.68
  6. Step 6: Final answer
    x = 219,399.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.