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Finding the Third Proportional to 131,999 and 216,696

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Solution

The third proportional to 131,999 and 216,696 is: 355,738.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,999 : 216,696 = 216,696 : x
  2. Step 2: Convert to fraction form
    131,999/216,696 = 216,696/x
  3. Step 3: Cross multiply
    131,999x = 216,696 × 216,696
  4. Step 4: Simplify right side
    131,999x = 46,957,156,416
  5. Step 5: Solve for x
    x = 46,957,156,416/131,999
  6. Step 6: Final answer
    x = 355,738.73

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.