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Finding the Fourth Proportional to 374,078.56, 515,141.11 and 324,997.48

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Solution

The fourth proportional to 374,078.56, 515,141.11 and 324,997.48 is: 447,551.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,078.56 : 515,141.11 = 324,997.48 : x
  2. Step 2: Convert to fraction form
    374,078.56/515,141.11 = 324,997.48/x
  3. Step 3: Cross multiply
    374,078.56x = 515,141.11 × 324,997.48
  4. Step 4: Simplify right side
    374,078.56x = 167,419,559,884.69
  5. Step 5: Solve for x
    x = 167,419,559,884.69/374,078.56
  6. Step 6: Final answer
    x = 447,551.88

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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.