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Finding the Fourth Proportional to 206,162.76, 309,239.28 and 65,922.60

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Solution

The fourth proportional to 206,162.76, 309,239.28 and 65,922.60 is: 98,882.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,162.76 : 309,239.28 = 65,922.60 : x
  2. Step 2: Convert to fraction form
    206,162.76/309,239.28 = 65,922.60/x
  3. Step 3: Cross multiply
    206,162.76x = 309,239.28 × 65,922.60
  4. Step 4: Simplify right side
    206,162.76x = 20,385,857,359.73
  5. Step 5: Solve for x
    x = 20,385,857,359.73/206,162.76
  6. Step 6: Final answer
    x = 98,882.35

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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.