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Finding the Third Proportional to 187,850 and 391,216

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Solution

The third proportional to 187,850 and 391,216 is: 814,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,850 : 391,216 = 391,216 : x
  2. Step 2: Convert to fraction form
    187,850/391,216 = 391,216/x
  3. Step 3: Cross multiply
    187,850x = 391,216 × 391,216
  4. Step 4: Simplify right side
    187,850x = 153,049,958,656
  5. Step 5: Solve for x
    x = 153,049,958,656/187,850
  6. Step 6: Final answer
    x = 814,745.59

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.