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Finding the Third Proportional to 187,968 and 413,320

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Solution

The third proportional to 187,968 and 413,320 is: 908,843.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,968 : 413,320 = 413,320 : x
  2. Step 2: Convert to fraction form
    187,968/413,320 = 413,320/x
  3. Step 3: Cross multiply
    187,968x = 413,320 × 413,320
  4. Step 4: Simplify right side
    187,968x = 170,833,422,400
  5. Step 5: Solve for x
    x = 170,833,422,400/187,968
  6. Step 6: Final answer
    x = 908,843.11

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.