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Finding the Fourth Proportional to 394,912.44, 544,412.34 and 281,538.36

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Solution

The fourth proportional to 394,912.44, 544,412.34 and 281,538.36 is: 388,118.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,912.44 : 544,412.34 = 281,538.36 : x
  2. Step 2: Convert to fraction form
    394,912.44/544,412.34 = 281,538.36/x
  3. Step 3: Cross multiply
    394,912.44x = 544,412.34 × 281,538.36
  4. Step 4: Simplify right side
    394,912.44x = 153,272,957,367.36
  5. Step 5: Solve for x
    x = 153,272,957,367.36/394,912.44
  6. Step 6: Final answer
    x = 388,118.84

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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.