Home / 378,821.88-522,786.74-206,749.24

Finding the Fourth Proportional to 378,821.88, 522,786.74 and 206,749.24

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Solution

The fourth proportional to 378,821.88, 522,786.74 and 206,749.24 is: 285,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,821.88 : 522,786.74 = 206,749.24 : x
  2. Step 2: Convert to fraction form
    378,821.88/522,786.74 = 206,749.24/x
  3. Step 3: Cross multiply
    378,821.88x = 522,786.74 × 206,749.24
  4. Step 4: Simplify right side
    378,821.88x = 108,085,761,177.08
  5. Step 5: Solve for x
    x = 108,085,761,177.08/378,821.88
  6. Step 6: Final answer
    x = 285,320.80

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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.