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Finding the Fourth Proportional to 271,408.80, 407,113.20 and 131,440.80

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Solution

The fourth proportional to 271,408.80, 407,113.20 and 131,440.80 is: 197,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,408.80 : 407,113.20 = 131,440.80 : x
  2. Step 2: Convert to fraction form
    271,408.80/407,113.20 = 131,440.80/x
  3. Step 3: Cross multiply
    271,408.80x = 407,113.20 × 131,440.80
  4. Step 4: Simplify right side
    271,408.80x = 53,511,284,698.56
  5. Step 5: Solve for x
    x = 53,511,284,698.56/271,408.80
  6. Step 6: Final answer
    x = 197,161.20

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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.