Home / 231,102.20-318,745.08-198,890.48

Finding the Fourth Proportional to 231,102.20, 318,745.08 and 198,890.48

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Solution

The fourth proportional to 231,102.20, 318,745.08 and 198,890.48 is: 274,317.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,102.20 : 318,745.08 = 198,890.48 : x
  2. Step 2: Convert to fraction form
    231,102.20/318,745.08 = 198,890.48/x
  3. Step 3: Cross multiply
    231,102.20x = 318,745.08 × 198,890.48
  4. Step 4: Simplify right side
    231,102.20x = 63,395,361,958.84
  5. Step 5: Solve for x
    x = 63,395,361,958.84/231,102.20
  6. Step 6: Final answer
    x = 274,317.43

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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.