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Finding the Third Proportional to 101,269.50 and 218,121.50

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Solution

The third proportional to 101,269.50 and 218,121.50 is: 469,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,269.50 : 218,121.50 = 218,121.50 : x
  2. Step 2: Convert to fraction form
    101,269.50/218,121.50 = 218,121.50/x
  3. Step 3: Cross multiply
    101,269.50x = 218,121.50 × 218,121.50
  4. Step 4: Simplify right side
    101,269.50x = 47,576,988,762.25
  5. Step 5: Solve for x
    x = 47,576,988,762.25/101,269.50
  6. Step 6: Final answer
    x = 469,805.70

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.