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Finding the Third Proportional to 247,920 and 394,032

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Solution

The third proportional to 247,920 and 394,032 is: 626,255.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,920 : 394,032 = 394,032 : x
  2. Step 2: Convert to fraction form
    247,920/394,032 = 394,032/x
  3. Step 3: Cross multiply
    247,920x = 394,032 × 394,032
  4. Step 4: Simplify right side
    247,920x = 155,261,217,024
  5. Step 5: Solve for x
    x = 155,261,217,024/247,920
  6. Step 6: Final answer
    x = 626,255.31

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.