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Finding the Third Proportional to 252,540 and 387,684

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Solution

The third proportional to 252,540 and 387,684 is: 595,148.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,540 : 387,684 = 387,684 : x
  2. Step 2: Convert to fraction form
    252,540/387,684 = 387,684/x
  3. Step 3: Cross multiply
    252,540x = 387,684 × 387,684
  4. Step 4: Simplify right side
    252,540x = 150,298,883,856
  5. Step 5: Solve for x
    x = 150,298,883,856/252,540
  6. Step 6: Final answer
    x = 595,148.82

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.