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Finding the Fourth Proportional to 271,149.99, 406,642.86 and 81,560.04

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Solution

The fourth proportional to 271,149.99, 406,642.86 and 81,560.04 is: 122,315.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,149.99 : 406,642.86 = 81,560.04 : x
  2. Step 2: Convert to fraction form
    271,149.99/406,642.86 = 81,560.04/x
  3. Step 3: Cross multiply
    271,149.99x = 406,642.86 × 81,560.04
  4. Step 4: Simplify right side
    271,149.99x = 33,165,807,927.31
  5. Step 5: Solve for x
    x = 33,165,807,927.31/271,149.99
  6. Step 6: Final answer
    x = 122,315.36

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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.