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Finding the Third Proportional to 189,214 and 315,345

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Solution

The third proportional to 189,214 and 315,345 is: 525,555.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,214 : 315,345 = 315,345 : x
  2. Step 2: Convert to fraction form
    189,214/315,345 = 315,345/x
  3. Step 3: Cross multiply
    189,214x = 315,345 × 315,345
  4. Step 4: Simplify right side
    189,214x = 99,442,469,025
  5. Step 5: Solve for x
    x = 99,442,469,025/189,214
  6. Step 6: Final answer
    x = 525,555.56

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.