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Finding the Fourth Proportional to 271,126.20, 406,616.40 and 81,586.20

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Solution

The fourth proportional to 271,126.20, 406,616.40 and 81,586.20 is: 122,357.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,126.20 : 406,616.40 = 81,586.20 : x
  2. Step 2: Convert to fraction form
    271,126.20/406,616.40 = 81,586.20/x
  3. Step 3: Cross multiply
    271,126.20x = 406,616.40 × 81,586.20
  4. Step 4: Simplify right side
    271,126.20x = 33,174,286,933.68
  5. Step 5: Solve for x
    x = 33,174,286,933.68/271,126.20
  6. Step 6: Final answer
    x = 122,357.36

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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.