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Finding the Third Proportional to 189,363 and 407,337

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Solution

The third proportional to 189,363 and 407,337 is: 876,218.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,363 : 407,337 = 407,337 : x
  2. Step 2: Convert to fraction form
    189,363/407,337 = 407,337/x
  3. Step 3: Cross multiply
    189,363x = 407,337 × 407,337
  4. Step 4: Simplify right side
    189,363x = 165,923,431,569
  5. Step 5: Solve for x
    x = 165,923,431,569/189,363
  6. Step 6: Final answer
    x = 876,218.86

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.