Home / 378,163.09-521,865.17-206,081.20

Finding the Fourth Proportional to 378,163.09, 521,865.17 and 206,081.20

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Solution

The fourth proportional to 378,163.09, 521,865.17 and 206,081.20 is: 284,392.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,163.09 : 521,865.17 = 206,081.20 : x
  2. Step 2: Convert to fraction form
    378,163.09/521,865.17 = 206,081.20/x
  3. Step 3: Cross multiply
    378,163.09x = 521,865.17 × 206,081.20
  4. Step 4: Simplify right side
    378,163.09x = 107,546,599,842.86
  5. Step 5: Solve for x
    x = 107,546,599,842.86/378,163.09
  6. Step 6: Final answer
    x = 284,392.11

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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.