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Finding the Third Proportional to 185,540 and 397,312

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Solution

The third proportional to 185,540 and 397,312 is: 850,796.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,540 : 397,312 = 397,312 : x
  2. Step 2: Convert to fraction form
    185,540/397,312 = 397,312/x
  3. Step 3: Cross multiply
    185,540x = 397,312 × 397,312
  4. Step 4: Simplify right side
    185,540x = 157,856,825,344
  5. Step 5: Solve for x
    x = 157,856,825,344/185,540
  6. Step 6: Final answer
    x = 850,796.73

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.