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Finding the Fourth Proportional to 215,476.65, 323,270.55 and 103,243.46

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Solution

The fourth proportional to 215,476.65, 323,270.55 and 103,243.46 is: 154,891.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,476.65 : 323,270.55 = 103,243.46 : x
  2. Step 2: Convert to fraction form
    215,476.65/323,270.55 = 103,243.46/x
  3. Step 3: Cross multiply
    215,476.65x = 323,270.55 × 103,243.46
  4. Step 4: Simplify right side
    215,476.65x = 33,375,568,481.75
  5. Step 5: Solve for x
    x = 33,375,568,481.75/215,476.65
  6. Step 6: Final answer
    x = 154,891.81

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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.