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Finding the Third Proportional to 129,792 and 281,616

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Solution

The third proportional to 129,792 and 281,616 is: 611,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,792 : 281,616 = 281,616 : x
  2. Step 2: Convert to fraction form
    129,792/281,616 = 281,616/x
  3. Step 3: Cross multiply
    129,792x = 281,616 × 281,616
  4. Step 4: Simplify right side
    129,792x = 79,307,571,456
  5. Step 5: Solve for x
    x = 79,307,571,456/129,792
  6. Step 6: Final answer
    x = 611,035.90

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.