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Finding the Third Proportional to 140,069.25 and 217,242

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Solution

The third proportional to 140,069.25 and 217,242 is: 336,933.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,069.25 : 217,242 = 217,242 : x
  2. Step 2: Convert to fraction form
    140,069.25/217,242 = 217,242/x
  3. Step 3: Cross multiply
    140,069.25x = 217,242 × 217,242
  4. Step 4: Simplify right side
    140,069.25x = 47,194,086,564
  5. Step 5: Solve for x
    x = 47,194,086,564/140,069.25
  6. Step 6: Final answer
    x = 336,933.96

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.