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Finding the Fourth Proportional to 274,662.56, 379,072.71 and 198,428.28

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Solution

The fourth proportional to 274,662.56, 379,072.71 and 198,428.28 is: 273,858.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,662.56 : 379,072.71 = 198,428.28 : x
  2. Step 2: Convert to fraction form
    274,662.56/379,072.71 = 198,428.28/x
  3. Step 3: Cross multiply
    274,662.56x = 379,072.71 × 198,428.28
  4. Step 4: Simplify right side
    274,662.56x = 75,218,745,840.24
  5. Step 5: Solve for x
    x = 75,218,745,840.24/274,662.56
  6. Step 6: Final answer
    x = 273,858.76

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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.