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Finding the Fourth Proportional to 271,321.80, 406,976.30 and 74,329.80

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Solution

The fourth proportional to 271,321.80, 406,976.30 and 74,329.80 is: 111,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,321.80 : 406,976.30 = 74,329.80 : x
  2. Step 2: Convert to fraction form
    271,321.80/406,976.30 = 74,329.80/x
  3. Step 3: Cross multiply
    271,321.80x = 406,976.30 × 74,329.80
  4. Step 4: Simplify right side
    271,321.80x = 30,250,466,983.74
  5. Step 5: Solve for x
    x = 30,250,466,983.74/271,321.80
  6. Step 6: Final answer
    x = 111,492.95

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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.