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Finding the Third Proportional to 138,737.81 and 298,517.91

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Solution

The third proportional to 138,737.81 and 298,517.91 is: 642,311.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,737.81 : 298,517.91 = 298,517.91 : x
  2. Step 2: Convert to fraction form
    138,737.81/298,517.91 = 298,517.91/x
  3. Step 3: Cross multiply
    138,737.81x = 298,517.91 × 298,517.91
  4. Step 4: Simplify right side
    138,737.81x = 89,112,940,351.88
  5. Step 5: Solve for x
    x = 89,112,940,351.88/138,737.81
  6. Step 6: Final answer
    x = 642,311.85

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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.