Home / 378,137.91-521,823.60-206,057.37

Finding the Fourth Proportional to 378,137.91, 521,823.60 and 206,057.37

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Solution

The fourth proportional to 378,137.91, 521,823.60 and 206,057.37 is: 284,355.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,137.91 : 521,823.60 = 206,057.37 : x
  2. Step 2: Convert to fraction form
    378,137.91/521,823.60 = 206,057.37/x
  3. Step 3: Cross multiply
    378,137.91x = 521,823.60 × 206,057.37
  4. Step 4: Simplify right side
    378,137.91x = 107,525,598,619.93
  5. Step 5: Solve for x
    x = 107,525,598,619.93/378,137.91
  6. Step 6: Final answer
    x = 284,355.51

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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.