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Finding the Third Proportional to 198,456 and 297,720

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Solution

The third proportional to 198,456 and 297,720 is: 446,634.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,456 : 297,720 = 297,720 : x
  2. Step 2: Convert to fraction form
    198,456/297,720 = 297,720/x
  3. Step 3: Cross multiply
    198,456x = 297,720 × 297,720
  4. Step 4: Simplify right side
    198,456x = 88,637,198,400
  5. Step 5: Solve for x
    x = 88,637,198,400/198,456
  6. Step 6: Final answer
    x = 446,634.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.