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Finding the Third Proportional to 138,817.13 and 298,701

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Solution

The third proportional to 138,817.13 and 298,701 is: 642,732.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,817.13 : 298,701 = 298,701 : x
  2. Step 2: Convert to fraction form
    138,817.13/298,701 = 298,701/x
  3. Step 3: Cross multiply
    138,817.13x = 298,701 × 298,701
  4. Step 4: Simplify right side
    138,817.13x = 89,222,287,401
  5. Step 5: Solve for x
    x = 89,222,287,401/138,817.13
  6. Step 6: Final answer
    x = 642,732.57

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.