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Finding the Third Proportional to 103,679 and 204,920

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Solution

The third proportional to 103,679 and 204,920 is: 405,021.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679 : 204,920 = 204,920 : x
  2. Step 2: Convert to fraction form
    103,679/204,920 = 204,920/x
  3. Step 3: Cross multiply
    103,679x = 204,920 × 204,920
  4. Step 4: Simplify right side
    103,679x = 41,992,206,400
  5. Step 5: Solve for x
    x = 41,992,206,400/103,679
  6. Step 6: Final answer
    x = 405,021.33

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.