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Finding the Third Proportional to 100,611 and 209,502

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Solution

The third proportional to 100,611 and 209,502 is: 436,245.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,611 : 209,502 = 209,502 : x
  2. Step 2: Convert to fraction form
    100,611/209,502 = 209,502/x
  3. Step 3: Cross multiply
    100,611x = 209,502 × 209,502
  4. Step 4: Simplify right side
    100,611x = 43,891,088,004
  5. Step 5: Solve for x
    x = 43,891,088,004/100,611
  6. Step 6: Final answer
    x = 436,245.42

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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.