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Finding the Third Proportional to 76,468 and 158,311

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Solution

The third proportional to 76,468 and 158,311 is: 327,749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,468 : 158,311 = 158,311 : x
  2. Step 2: Convert to fraction form
    76,468/158,311 = 158,311/x
  3. Step 3: Cross multiply
    76,468x = 158,311 × 158,311
  4. Step 4: Simplify right side
    76,468x = 25,062,372,721
  5. Step 5: Solve for x
    x = 25,062,372,721/76,468
  6. Step 6: Final answer
    x = 327,749.81

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.