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Finding the Third Proportional to 198,379.13 and 301,720.50

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Solution

The third proportional to 198,379.13 and 301,720.50 is: 458,895.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,379.13 : 301,720.50 = 301,720.50 : x
  2. Step 2: Convert to fraction form
    198,379.13/301,720.50 = 301,720.50/x
  3. Step 3: Cross multiply
    198,379.13x = 301,720.50 × 301,720.50
  4. Step 4: Simplify right side
    198,379.13x = 91,035,260,120.25
  5. Step 5: Solve for x
    x = 91,035,260,120.25/198,379.13
  6. Step 6: Final answer
    x = 458,895.36

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.