Home / 378,148.05-521,819.64-208,382.13

Finding the Fourth Proportional to 378,148.05, 521,819.64 and 208,382.13

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Solution

The fourth proportional to 378,148.05, 521,819.64 and 208,382.13 is: 287,553.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,148.05 : 521,819.64 = 208,382.13 : x
  2. Step 2: Convert to fraction form
    378,148.05/521,819.64 = 208,382.13/x
  3. Step 3: Cross multiply
    378,148.05x = 521,819.64 × 208,382.13
  4. Step 4: Simplify right side
    378,148.05x = 108,737,888,059.03
  5. Step 5: Solve for x
    x = 108,737,888,059.03/378,148.05
  6. Step 6: Final answer
    x = 287,553.75

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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.