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Finding the Third Proportional to 155,540 and 247,613

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Solution

The third proportional to 155,540 and 247,613 is: 394,189.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,540 : 247,613 = 247,613 : x
  2. Step 2: Convert to fraction form
    155,540/247,613 = 247,613/x
  3. Step 3: Cross multiply
    155,540x = 247,613 × 247,613
  4. Step 4: Simplify right side
    155,540x = 61,312,197,769
  5. Step 5: Solve for x
    x = 61,312,197,769/155,540
  6. Step 6: Final answer
    x = 394,189.26

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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.