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Finding the Third Proportional to 225,018 and 328,638

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Solution

The third proportional to 225,018 and 328,638 is: 479,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,018 : 328,638 = 328,638 : x
  2. Step 2: Convert to fraction form
    225,018/328,638 = 328,638/x
  3. Step 3: Cross multiply
    225,018x = 328,638 × 328,638
  4. Step 4: Simplify right side
    225,018x = 108,002,935,044
  5. Step 5: Solve for x
    x = 108,002,935,044/225,018
  6. Step 6: Final answer
    x = 479,974.65

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.