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Finding the Fourth Proportional to 321,709.36, 482,721.08 and 227,544.56

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Solution

The fourth proportional to 321,709.36, 482,721.08 and 227,544.56 is: 341,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,709.36 : 482,721.08 = 227,544.56 : x
  2. Step 2: Convert to fraction form
    321,709.36/482,721.08 = 227,544.56/x
  3. Step 3: Cross multiply
    321,709.36x = 482,721.08 × 227,544.56
  4. Step 4: Simplify right side
    321,709.36x = 109,840,555,751.33
  5. Step 5: Solve for x
    x = 109,840,555,751.33/321,709.36
  6. Step 6: Final answer
    x = 341,427.91

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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.