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Finding the Fourth Proportional to 281,101.91, 421,791.37 and 131,352.55

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Solution

The fourth proportional to 281,101.91, 421,791.37 and 131,352.55 is: 197,093.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,101.91 : 421,791.37 = 131,352.55 : x
  2. Step 2: Convert to fraction form
    281,101.91/421,791.37 = 131,352.55/x
  3. Step 3: Cross multiply
    281,101.91x = 421,791.37 × 131,352.55
  4. Step 4: Simplify right side
    281,101.91x = 55,403,372,017.49
  5. Step 5: Solve for x
    x = 55,403,372,017.49/281,101.91
  6. Step 6: Final answer
    x = 197,093.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.