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Finding the Fourth Proportional to 274,663.82, 379,074.44 and 198,429.54

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Solution

The fourth proportional to 274,663.82, 379,074.44 and 198,429.54 is: 273,860.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,663.82 : 379,074.44 = 198,429.54 : x
  2. Step 2: Convert to fraction form
    274,663.82/379,074.44 = 198,429.54/x
  3. Step 3: Cross multiply
    274,663.82x = 379,074.44 × 198,429.54
  4. Step 4: Simplify right side
    274,663.82x = 75,219,566,754.96
  5. Step 5: Solve for x
    x = 75,219,566,754.96/274,663.82
  6. Step 6: Final answer
    x = 273,860.48

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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.