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Finding the Third Proportional to 103,736 and 221,680

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Solution

The third proportional to 103,736 and 221,680 is: 473,721.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,736 : 221,680 = 221,680 : x
  2. Step 2: Convert to fraction form
    103,736/221,680 = 221,680/x
  3. Step 3: Cross multiply
    103,736x = 221,680 × 221,680
  4. Step 4: Simplify right side
    103,736x = 49,142,022,400
  5. Step 5: Solve for x
    x = 49,142,022,400/103,736
  6. Step 6: Final answer
    x = 473,721.97

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.