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Finding the Fourth Proportional to 378,892.44, 568,036.92 and 218,786.64

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Solution

The fourth proportional to 378,892.44, 568,036.92 and 218,786.64 is: 328,005.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,892.44 : 568,036.92 = 218,786.64 : x
  2. Step 2: Convert to fraction form
    378,892.44/568,036.92 = 218,786.64/x
  3. Step 3: Cross multiply
    378,892.44x = 568,036.92 × 218,786.64
  4. Step 4: Simplify right side
    378,892.44x = 124,278,889,122.75
  5. Step 5: Solve for x
    x = 124,278,889,122.75/378,892.44
  6. Step 6: Final answer
    x = 328,005.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.