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Finding the Third Proportional to 188,418 and 409,560

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Solution

The third proportional to 188,418 and 409,560 is: 890,251.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,418 : 409,560 = 409,560 : x
  2. Step 2: Convert to fraction form
    188,418/409,560 = 409,560/x
  3. Step 3: Cross multiply
    188,418x = 409,560 × 409,560
  4. Step 4: Simplify right side
    188,418x = 167,739,393,600
  5. Step 5: Solve for x
    x = 167,739,393,600/188,418
  6. Step 6: Final answer
    x = 890,251.43

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.