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Finding the Third Proportional to 174,936 and 378,864

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Solution

The third proportional to 174,936 and 378,864 is: 820,516.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,936 : 378,864 = 378,864 : x
  2. Step 2: Convert to fraction form
    174,936/378,864 = 378,864/x
  3. Step 3: Cross multiply
    174,936x = 378,864 × 378,864
  4. Step 4: Simplify right side
    174,936x = 143,537,930,496
  5. Step 5: Solve for x
    x = 143,537,930,496/174,936
  6. Step 6: Final answer
    x = 820,516.82

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.