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Finding the Fourth Proportional to 206,658.92, 310,020.78 and 88,330.88

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Solution

The fourth proportional to 206,658.92, 310,020.78 and 88,330.88 is: 132,510.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,658.92 : 310,020.78 = 88,330.88 : x
  2. Step 2: Convert to fraction form
    206,658.92/310,020.78 = 88,330.88/x
  3. Step 3: Cross multiply
    206,658.92x = 310,020.78 × 88,330.88
  4. Step 4: Simplify right side
    206,658.92x = 27,384,408,315.69
  5. Step 5: Solve for x
    x = 27,384,408,315.69/206,658.92
  6. Step 6: Final answer
    x = 132,510.17

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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.