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Finding the Fourth Proportional to 206,616.67, 310,044.67 and 86,662.95

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Solution

The fourth proportional to 206,616.67, 310,044.67 and 86,662.95 is: 130,044.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,616.67 : 310,044.67 = 86,662.95 : x
  2. Step 2: Convert to fraction form
    206,616.67/310,044.67 = 86,662.95/x
  3. Step 3: Cross multiply
    206,616.67x = 310,044.67 × 86,662.95
  4. Step 4: Simplify right side
    206,616.67x = 26,869,385,733.98
  5. Step 5: Solve for x
    x = 26,869,385,733.98/206,616.67
  6. Step 6: Final answer
    x = 130,044.62

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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.