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Finding the Third Proportional to 136,656 and 299,636

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Solution

The third proportional to 136,656 and 299,636 is: 656,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,656 : 299,636 = 299,636 : x
  2. Step 2: Convert to fraction form
    136,656/299,636 = 299,636/x
  3. Step 3: Cross multiply
    136,656x = 299,636 × 299,636
  4. Step 4: Simplify right side
    136,656x = 89,781,732,496
  5. Step 5: Solve for x
    x = 89,781,732,496/136,656
  6. Step 6: Final answer
    x = 656,990.78

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.