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Finding the Third Proportional to 135,967.50 and 299,121

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Solution

The third proportional to 135,967.50 and 299,121 is: 658,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,967.50 : 299,121 = 299,121 : x
  2. Step 2: Convert to fraction form
    135,967.50/299,121 = 299,121/x
  3. Step 3: Cross multiply
    135,967.50x = 299,121 × 299,121
  4. Step 4: Simplify right side
    135,967.50x = 89,473,372,641
  5. Step 5: Solve for x
    x = 89,473,372,641/135,967.50
  6. Step 6: Final answer
    x = 658,049.70

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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.