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Finding the Third Proportional to 218,562 and 329,851

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Solution

The third proportional to 218,562 and 329,851 is: 497,806.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,562 : 329,851 = 329,851 : x
  2. Step 2: Convert to fraction form
    218,562/329,851 = 329,851/x
  3. Step 3: Cross multiply
    218,562x = 329,851 × 329,851
  4. Step 4: Simplify right side
    218,562x = 108,801,682,201
  5. Step 5: Solve for x
    x = 108,801,682,201/218,562
  6. Step 6: Final answer
    x = 497,806.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.