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Finding the Third Proportional to 158,681 and 217,589

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Solution

The third proportional to 158,681 and 217,589 is: 298,365.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,681 : 217,589 = 217,589 : x
  2. Step 2: Convert to fraction form
    158,681/217,589 = 217,589/x
  3. Step 3: Cross multiply
    158,681x = 217,589 × 217,589
  4. Step 4: Simplify right side
    158,681x = 47,344,972,921
  5. Step 5: Solve for x
    x = 47,344,972,921/158,681
  6. Step 6: Final answer
    x = 298,365.73

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.