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Finding the Third Proportional to 103,666 and 218,401

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Solution

The third proportional to 103,666 and 218,401 is: 460,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,666 : 218,401 = 218,401 : x
  2. Step 2: Convert to fraction form
    103,666/218,401 = 218,401/x
  3. Step 3: Cross multiply
    103,666x = 218,401 × 218,401
  4. Step 4: Simplify right side
    103,666x = 47,698,996,801
  5. Step 5: Solve for x
    x = 47,698,996,801/103,666
  6. Step 6: Final answer
    x = 460,121.90

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.