Home / 378,174.11-521,906.09-231,061.95

Finding the Fourth Proportional to 378,174.11, 521,906.09 and 231,061.95

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Solution

The fourth proportional to 378,174.11, 521,906.09 and 231,061.95 is: 318,881.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,174.11 : 521,906.09 = 231,061.95 : x
  2. Step 2: Convert to fraction form
    378,174.11/521,906.09 = 231,061.95/x
  3. Step 3: Cross multiply
    378,174.11x = 521,906.09 × 231,061.95
  4. Step 4: Simplify right side
    378,174.11x = 120,592,637,716.97
  5. Step 5: Solve for x
    x = 120,592,637,716.97/378,174.11
  6. Step 6: Final answer
    x = 318,881.27

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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.