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Finding the Third Proportional to 100,788 and 219,996

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Solution

The third proportional to 100,788 and 219,996 is: 480,198.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,788 : 219,996 = 219,996 : x
  2. Step 2: Convert to fraction form
    100,788/219,996 = 219,996/x
  3. Step 3: Cross multiply
    100,788x = 219,996 × 219,996
  4. Step 4: Simplify right side
    100,788x = 48,398,240,016
  5. Step 5: Solve for x
    x = 48,398,240,016/100,788
  6. Step 6: Final answer
    x = 480,198.44

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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.