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Finding the Fourth Proportional to 219,719.20, 329,578.80 and 167,231.20

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Solution

The fourth proportional to 219,719.20, 329,578.80 and 167,231.20 is: 250,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,719.20 : 329,578.80 = 167,231.20 : x
  2. Step 2: Convert to fraction form
    219,719.20/329,578.80 = 167,231.20/x
  3. Step 3: Cross multiply
    219,719.20x = 329,578.80 × 167,231.20
  4. Step 4: Simplify right side
    219,719.20x = 55,115,858,218.56
  5. Step 5: Solve for x
    x = 55,115,858,218.56/219,719.20
  6. Step 6: Final answer
    x = 250,846.80

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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.