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Finding the Fourth Proportional to 271,716.88, 407,656.32 and 129,668.80

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Solution

The fourth proportional to 271,716.88, 407,656.32 and 129,668.80 is: 194,541.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,716.88 : 407,656.32 = 129,668.80 : x
  2. Step 2: Convert to fraction form
    271,716.88/407,656.32 = 129,668.80/x
  3. Step 3: Cross multiply
    271,716.88x = 407,656.32 × 129,668.80
  4. Step 4: Simplify right side
    271,716.88x = 52,860,305,826.82
  5. Step 5: Solve for x
    x = 52,860,305,826.82/271,716.88
  6. Step 6: Final answer
    x = 194,541.85

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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.