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Finding the Fourth Proportional to 394,995.80, 544,941.99 and 274,076.57

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Solution

The fourth proportional to 394,995.80, 544,941.99 and 274,076.57 is: 378,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,995.80 : 544,941.99 = 274,076.57 : x
  2. Step 2: Convert to fraction form
    394,995.80/544,941.99 = 274,076.57/x
  3. Step 3: Cross multiply
    394,995.80x = 544,941.99 × 274,076.57
  4. Step 4: Simplify right side
    394,995.80x = 149,355,828,743.46
  5. Step 5: Solve for x
    x = 149,355,828,743.46/394,995.80
  6. Step 6: Final answer
    x = 378,120.05

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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.