Home / 394,979.39-545,085.57-222,939.23

Finding the Fourth Proportional to 394,979.39, 545,085.57 and 222,939.23

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Solution

The fourth proportional to 394,979.39, 545,085.57 and 222,939.23 is: 307,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,979.39 : 545,085.57 = 222,939.23 : x
  2. Step 2: Convert to fraction form
    394,979.39/545,085.57 = 222,939.23/x
  3. Step 3: Cross multiply
    394,979.39x = 545,085.57 × 222,939.23
  4. Step 4: Simplify right side
    394,979.39x = 121,520,957,259.91
  5. Step 5: Solve for x
    x = 121,520,957,259.91/394,979.39
  6. Step 6: Final answer
    x = 307,664.05

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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.