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Finding the Third Proportional to 215,787 and 326,679.38

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Solution

The third proportional to 215,787 and 326,679.38 is: 494,559.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,787 : 326,679.38 = 326,679.38 : x
  2. Step 2: Convert to fraction form
    215,787/326,679.38 = 326,679.38/x
  3. Step 3: Cross multiply
    215,787x = 326,679.38 × 326,679.38
  4. Step 4: Simplify right side
    215,787x = 106,719,414,050.39
  5. Step 5: Solve for x
    x = 106,719,414,050.39/215,787
  6. Step 6: Final answer
    x = 494,559.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.