Home / 378,225.16-521,943.89-206,144.71

Finding the Fourth Proportional to 378,225.16, 521,943.89 and 206,144.71

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Solution

The fourth proportional to 378,225.16, 521,943.89 and 206,144.71 is: 284,475.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,225.16 : 521,943.89 = 206,144.71 : x
  2. Step 2: Convert to fraction form
    378,225.16/521,943.89 = 206,144.71/x
  3. Step 3: Cross multiply
    378,225.16x = 521,943.89 × 206,144.71
  4. Step 4: Simplify right side
    378,225.16x = 107,595,969,504.74
  5. Step 5: Solve for x
    x = 107,595,969,504.74/378,225.16
  6. Step 6: Final answer
    x = 284,475.97

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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.