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Finding the Fourth Proportional to 394,687.85, 544,918.28 and 273,786.84

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Solution

The fourth proportional to 394,687.85, 544,918.28 and 273,786.84 is: 377,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,687.85 : 544,918.28 = 273,786.84 : x
  2. Step 2: Convert to fraction form
    394,687.85/544,918.28 = 273,786.84/x
  3. Step 3: Cross multiply
    394,687.85x = 544,918.28 × 273,786.84
  4. Step 4: Simplify right side
    394,687.85x = 149,191,452,570.50
  5. Step 5: Solve for x
    x = 149,191,452,570.50/394,687.85
  6. Step 6: Final answer
    x = 377,998.60

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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.