Home / 394,936.81-545,042.03-225,175.21

Finding the Fourth Proportional to 394,936.81, 545,042.03 and 225,175.21

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Solution

The fourth proportional to 394,936.81, 545,042.03 and 225,175.21 is: 310,758.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,936.81 : 545,042.03 = 225,175.21 : x
  2. Step 2: Convert to fraction form
    394,936.81/545,042.03 = 225,175.21/x
  3. Step 3: Cross multiply
    394,936.81x = 545,042.03 × 225,175.21
  4. Step 4: Simplify right side
    394,936.81x = 122,729,951,401.80
  5. Step 5: Solve for x
    x = 122,729,951,401.80/394,936.81
  6. Step 6: Final answer
    x = 310,758.46

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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.