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Finding the Third Proportional to 189,380.50 and 414,391.50

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Solution

The third proportional to 189,380.50 and 414,391.50 is: 906,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,380.50 : 414,391.50 = 414,391.50 : x
  2. Step 2: Convert to fraction form
    189,380.50/414,391.50 = 414,391.50/x
  3. Step 3: Cross multiply
    189,380.50x = 414,391.50 × 414,391.50
  4. Step 4: Simplify right side
    189,380.50x = 171,720,315,272.25
  5. Step 5: Solve for x
    x = 171,720,315,272.25/189,380.50
  6. Step 6: Final answer
    x = 906,747.61

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.