Home / 394,939.68-545,046-225,178.08

Finding the Fourth Proportional to 394,939.68, 545,046 and 225,178.08

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Solution

The fourth proportional to 394,939.68, 545,046 and 225,178.08 is: 310,762.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,939.68 : 545,046 = 225,178.08 : x
  2. Step 2: Convert to fraction form
    394,939.68/545,046 = 225,178.08/x
  3. Step 3: Cross multiply
    394,939.68x = 545,046 × 225,178.08
  4. Step 4: Simplify right side
    394,939.68x = 122,732,411,791.68
  5. Step 5: Solve for x
    x = 122,732,411,791.68/394,939.68
  6. Step 6: Final answer
    x = 310,762.42

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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.