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Finding the Third Proportional to 138,732.75 and 298,520.44

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Solution

The third proportional to 138,732.75 and 298,520.44 is: 642,346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,732.75 : 298,520.44 = 298,520.44 : x
  2. Step 2: Convert to fraction form
    138,732.75/298,520.44 = 298,520.44/x
  3. Step 3: Cross multiply
    138,732.75x = 298,520.44 × 298,520.44
  4. Step 4: Simplify right side
    138,732.75x = 89,114,451,605.19
  5. Step 5: Solve for x
    x = 89,114,451,605.19/138,732.75
  6. Step 6: Final answer
    x = 642,346.18

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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.