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Finding the Fourth Proportional to 374,078.50, 515,141.05 and 324,997.43

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Solution

The fourth proportional to 374,078.50, 515,141.05 and 324,997.43 is: 447,551.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,078.50 : 515,141.05 = 324,997.43 : x
  2. Step 2: Convert to fraction form
    374,078.50/515,141.05 = 324,997.43/x
  3. Step 3: Cross multiply
    374,078.50x = 515,141.05 × 324,997.43
  4. Step 4: Simplify right side
    374,078.50x = 167,419,517,456.34
  5. Step 5: Solve for x
    x = 167,419,517,456.34/374,078.50
  6. Step 6: Final answer
    x = 447,551.83

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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.