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Finding the Third Proportional to 143,561 and 220,364

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Solution

The third proportional to 143,561 and 220,364 is: 338,255.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,561 : 220,364 = 220,364 : x
  2. Step 2: Convert to fraction form
    143,561/220,364 = 220,364/x
  3. Step 3: Cross multiply
    143,561x = 220,364 × 220,364
  4. Step 4: Simplify right side
    143,561x = 48,560,292,496
  5. Step 5: Solve for x
    x = 48,560,292,496/143,561
  6. Step 6: Final answer
    x = 338,255.46

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.