Home / 378,146.46-521,841.06-208,380.54

Finding the Fourth Proportional to 378,146.46, 521,841.06 and 208,380.54

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Solution

The fourth proportional to 378,146.46, 521,841.06 and 208,380.54 is: 287,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,146.46 : 521,841.06 = 208,380.54 : x
  2. Step 2: Convert to fraction form
    378,146.46/521,841.06 = 208,380.54/x
  3. Step 3: Cross multiply
    378,146.46x = 521,841.06 × 208,380.54
  4. Step 4: Simplify right side
    378,146.46x = 108,741,521,876.97
  5. Step 5: Solve for x
    x = 108,741,521,876.97/378,146.46
  6. Step 6: Final answer
    x = 287,564.56

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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.