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Finding the Fourth Proportional to 394,996.05, 544,942.34 and 274,076.82

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Solution

The fourth proportional to 394,996.05, 544,942.34 and 274,076.82 is: 378,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,996.05 : 544,942.34 = 274,076.82 : x
  2. Step 2: Convert to fraction form
    394,996.05/544,942.34 = 274,076.82/x
  3. Step 3: Cross multiply
    394,996.05x = 544,942.34 × 274,076.82
  4. Step 4: Simplify right side
    394,996.05x = 149,356,059,535.46
  5. Step 5: Solve for x
    x = 149,356,059,535.46/394,996.05
  6. Step 6: Final answer
    x = 378,120.39

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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.