Home / 394,979.31-545,057.95-225,268.11

Finding the Fourth Proportional to 394,979.31, 545,057.95 and 225,268.11

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Solution

The fourth proportional to 394,979.31, 545,057.95 and 225,268.11 is: 310,862.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,979.31 : 545,057.95 = 225,268.11 : x
  2. Step 2: Convert to fraction form
    394,979.31/545,057.95 = 225,268.11/x
  3. Step 3: Cross multiply
    394,979.31x = 545,057.95 × 225,268.11
  4. Step 4: Simplify right side
    394,979.31x = 122,784,174,236.97
  5. Step 5: Solve for x
    x = 122,784,174,236.97/394,979.31
  6. Step 6: Final answer
    x = 310,862.29

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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.