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Finding the Fourth Proportional to 271,329.60, 406,879.20 and 131,131.20

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Solution

The fourth proportional to 271,329.60, 406,879.20 and 131,131.20 is: 196,641.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,329.60 : 406,879.20 = 131,131.20 : x
  2. Step 2: Convert to fraction form
    271,329.60/406,879.20 = 131,131.20/x
  3. Step 3: Cross multiply
    271,329.60x = 406,879.20 × 131,131.20
  4. Step 4: Simplify right side
    271,329.60x = 53,354,557,751.04
  5. Step 5: Solve for x
    x = 53,354,557,751.04/271,329.60
  6. Step 6: Final answer
    x = 196,641.12

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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.