Home / 378,067.14-521,732.67-208,299.78

Finding the Fourth Proportional to 378,067.14, 521,732.67 and 208,299.78

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Solution

The fourth proportional to 378,067.14, 521,732.67 and 208,299.78 is: 287,453.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,067.14 : 521,732.67 = 208,299.78 : x
  2. Step 2: Convert to fraction form
    378,067.14/521,732.67 = 208,299.78/x
  3. Step 3: Cross multiply
    378,067.14x = 521,732.67 × 208,299.78
  4. Step 4: Simplify right side
    378,067.14x = 108,676,800,379.81
  5. Step 5: Solve for x
    x = 108,676,800,379.81/378,067.14
  6. Step 6: Final answer
    x = 287,453.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.