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Finding the Third Proportional to 155,623 and 247,742

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Solution

The third proportional to 155,623 and 247,742 is: 394,389.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,623 : 247,742 = 247,742 : x
  2. Step 2: Convert to fraction form
    155,623/247,742 = 247,742/x
  3. Step 3: Cross multiply
    155,623x = 247,742 × 247,742
  4. Step 4: Simplify right side
    155,623x = 61,376,098,564
  5. Step 5: Solve for x
    x = 61,376,098,564/155,623
  6. Step 6: Final answer
    x = 394,389.64

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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.