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Finding the Third Proportional to 326,918 and 450,198

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Solution

The third proportional to 326,918 and 450,198 is: 619,966.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,918 : 450,198 = 450,198 : x
  2. Step 2: Convert to fraction form
    326,918/450,198 = 450,198/x
  3. Step 3: Cross multiply
    326,918x = 450,198 × 450,198
  4. Step 4: Simplify right side
    326,918x = 202,678,239,204
  5. Step 5: Solve for x
    x = 202,678,239,204/326,918
  6. Step 6: Final answer
    x = 619,966.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.