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Finding the Third Proportional to 140,268 and 217,296

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Solution

The third proportional to 140,268 and 217,296 is: 336,623.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,268 : 217,296 = 217,296 : x
  2. Step 2: Convert to fraction form
    140,268/217,296 = 217,296/x
  3. Step 3: Cross multiply
    140,268x = 217,296 × 217,296
  4. Step 4: Simplify right side
    140,268x = 47,217,551,616
  5. Step 5: Solve for x
    x = 47,217,551,616/140,268
  6. Step 6: Final answer
    x = 336,623.83

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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.