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Finding the Third Proportional to 103,661 and 215,110

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Solution

The third proportional to 103,661 and 215,110 is: 446,381.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,661 : 215,110 = 215,110 : x
  2. Step 2: Convert to fraction form
    103,661/215,110 = 215,110/x
  3. Step 3: Cross multiply
    103,661x = 215,110 × 215,110
  4. Step 4: Simplify right side
    103,661x = 46,272,312,100
  5. Step 5: Solve for x
    x = 46,272,312,100/103,661
  6. Step 6: Final answer
    x = 446,381.11

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.