Home / 394,979.18-545,057.79-225,267.98

Finding the Fourth Proportional to 394,979.18, 545,057.79 and 225,267.98

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Solution

The fourth proportional to 394,979.18, 545,057.79 and 225,267.98 is: 310,862.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,979.18 : 545,057.79 = 225,267.98 : x
  2. Step 2: Convert to fraction form
    394,979.18/545,057.79 = 225,267.98/x
  3. Step 3: Cross multiply
    394,979.18x = 545,057.79 × 225,267.98
  4. Step 4: Simplify right side
    394,979.18x = 122,784,067,336.56
  5. Step 5: Solve for x
    x = 122,784,067,336.56/394,979.18
  6. Step 6: Final answer
    x = 310,862.13

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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.