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Finding the Third Proportional to 175,394 and 378,816

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Solution

The third proportional to 175,394 and 378,816 is: 818,166.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,394 : 378,816 = 378,816 : x
  2. Step 2: Convert to fraction form
    175,394/378,816 = 378,816/x
  3. Step 3: Cross multiply
    175,394x = 378,816 × 378,816
  4. Step 4: Simplify right side
    175,394x = 143,501,561,856
  5. Step 5: Solve for x
    x = 143,501,561,856/175,394
  6. Step 6: Final answer
    x = 818,166.88

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.