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Finding the Third Proportional to 138,562 and 298,744

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Solution

The third proportional to 138,562 and 298,744 is: 644,101.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,562 : 298,744 = 298,744 : x
  2. Step 2: Convert to fraction form
    138,562/298,744 = 298,744/x
  3. Step 3: Cross multiply
    138,562x = 298,744 × 298,744
  4. Step 4: Simplify right side
    138,562x = 89,247,977,536
  5. Step 5: Solve for x
    x = 89,247,977,536/138,562
  6. Step 6: Final answer
    x = 644,101.40

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.