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Finding the Fourth Proportional to 271,420.80, 407,131.20 and 131,452.80

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Solution

The fourth proportional to 271,420.80, 407,131.20 and 131,452.80 is: 197,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,420.80 : 407,131.20 = 131,452.80 : x
  2. Step 2: Convert to fraction form
    271,420.80/407,131.20 = 131,452.80/x
  3. Step 3: Cross multiply
    271,420.80x = 407,131.20 × 131,452.80
  4. Step 4: Simplify right side
    271,420.80x = 53,518,536,207.36
  5. Step 5: Solve for x
    x = 53,518,536,207.36/271,420.80
  6. Step 6: Final answer
    x = 197,179.20

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1.5x scale

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.