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Finding the Third Proportional to 198,456.50 and 297,720.75

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Solution

The third proportional to 198,456.50 and 297,720.75 is: 446,635.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,456.50 : 297,720.75 = 297,720.75 : x
  2. Step 2: Convert to fraction form
    198,456.50/297,720.75 = 297,720.75/x
  3. Step 3: Cross multiply
    198,456.50x = 297,720.75 × 297,720.75
  4. Step 4: Simplify right side
    198,456.50x = 88,637,644,980.56
  5. Step 5: Solve for x
    x = 88,637,644,980.56/198,456.50
  6. Step 6: Final answer
    x = 446,635.13

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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.