Home / 378,138.16-521,823.97-206,057.64

Finding the Fourth Proportional to 378,138.16, 521,823.97 and 206,057.64

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Solution

The fourth proportional to 378,138.16, 521,823.97 and 206,057.64 is: 284,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,138.16 : 521,823.97 = 206,057.64 : x
  2. Step 2: Convert to fraction form
    378,138.16/521,823.97 = 206,057.64/x
  3. Step 3: Cross multiply
    378,138.16x = 521,823.97 × 206,057.64
  4. Step 4: Simplify right side
    378,138.16x = 107,525,815,753.63
  5. Step 5: Solve for x
    x = 107,525,815,753.63/378,138.16
  6. Step 6: Final answer
    x = 284,355.90

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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.