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Finding the Third Proportional to 217,794 and 326,688

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Solution

The third proportional to 217,794 and 326,688 is: 490,027.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,794 : 326,688 = 326,688 : x
  2. Step 2: Convert to fraction form
    217,794/326,688 = 326,688/x
  3. Step 3: Cross multiply
    217,794x = 326,688 × 326,688
  4. Step 4: Simplify right side
    217,794x = 106,725,049,344
  5. Step 5: Solve for x
    x = 106,725,049,344/217,794
  6. Step 6: Final answer
    x = 490,027.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.