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Finding the Third Proportional to 86,503 and 186,344

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Solution

The third proportional to 86,503 and 186,344 is: 401,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,503 : 186,344 = 186,344 : x
  2. Step 2: Convert to fraction form
    86,503/186,344 = 186,344/x
  3. Step 3: Cross multiply
    86,503x = 186,344 × 186,344
  4. Step 4: Simplify right side
    86,503x = 34,724,086,336
  5. Step 5: Solve for x
    x = 34,724,086,336/86,503
  6. Step 6: Final answer
    x = 401,420.60

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.