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Finding the Third Proportional to 102,438 and 221,723.50

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Solution

The third proportional to 102,438 and 221,723.50 is: 479,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,438 : 221,723.50 = 221,723.50 : x
  2. Step 2: Convert to fraction form
    102,438/221,723.50 = 221,723.50/x
  3. Step 3: Cross multiply
    102,438x = 221,723.50 × 221,723.50
  4. Step 4: Simplify right side
    102,438x = 49,161,310,452.25
  5. Step 5: Solve for x
    x = 49,161,310,452.25/102,438
  6. Step 6: Final answer
    x = 479,912.83

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.