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Finding the Third Proportional to 318,603.38 and 445,456.97

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Solution

The third proportional to 318,603.38 and 445,456.97 is: 622,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,603.38 : 445,456.97 = 445,456.97 : x
  2. Step 2: Convert to fraction form
    318,603.38/445,456.97 = 445,456.97/x
  3. Step 3: Cross multiply
    318,603.38x = 445,456.97 × 445,456.97
  4. Step 4: Simplify right side
    318,603.38x = 198,431,911,007.94
  5. Step 5: Solve for x
    x = 198,431,911,007.94/318,603.38
  6. Step 6: Final answer
    x = 622,817.98

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.