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Finding the Fourth Proportional to 305,855.52, 422,080.62 and 171,719.52

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Solution

The fourth proportional to 305,855.52, 422,080.62 and 171,719.52 is: 236,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,855.52 : 422,080.62 = 171,719.52 : x
  2. Step 2: Convert to fraction form
    305,855.52/422,080.62 = 171,719.52/x
  3. Step 3: Cross multiply
    305,855.52x = 422,080.62 × 171,719.52
  4. Step 4: Simplify right side
    305,855.52x = 72,479,481,467.70
  5. Step 5: Solve for x
    x = 72,479,481,467.70/305,855.52
  6. Step 6: Final answer
    x = 236,972.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.