Home / 378,379.32-522,167-208,619.52

Finding the Fourth Proportional to 378,379.32, 522,167 and 208,619.52

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Solution

The fourth proportional to 378,379.32, 522,167 and 208,619.52 is: 287,896.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,379.32 : 522,167 = 208,619.52 : x
  2. Step 2: Convert to fraction form
    378,379.32/522,167 = 208,619.52/x
  3. Step 3: Cross multiply
    378,379.32x = 522,167 × 208,619.52
  4. Step 4: Simplify right side
    378,379.32x = 108,934,228,899.84
  5. Step 5: Solve for x
    x = 108,934,228,899.84/378,379.32
  6. Step 6: Final answer
    x = 287,896.89

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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.