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Finding the Fourth Proportional to 271,356.48, 406,956.80 and 91,422.32

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Solution

The fourth proportional to 271,356.48, 406,956.80 and 91,422.32 is: 137,107.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,356.48 : 406,956.80 = 91,422.32 : x
  2. Step 2: Convert to fraction form
    271,356.48/406,956.80 = 91,422.32/x
  3. Step 3: Cross multiply
    271,356.48x = 406,956.80 × 91,422.32
  4. Step 4: Simplify right side
    271,356.48x = 37,204,934,795.78
  5. Step 5: Solve for x
    x = 37,204,934,795.78/271,356.48
  6. Step 6: Final answer
    x = 137,107.23

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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.