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Finding the Third Proportional to 100,809 and 219,762

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Solution

The third proportional to 100,809 and 219,762 is: 479,077.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,809 : 219,762 = 219,762 : x
  2. Step 2: Convert to fraction form
    100,809/219,762 = 219,762/x
  3. Step 3: Cross multiply
    100,809x = 219,762 × 219,762
  4. Step 4: Simplify right side
    100,809x = 48,295,336,644
  5. Step 5: Solve for x
    x = 48,295,336,644/100,809
  6. Step 6: Final answer
    x = 479,077.63

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.