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Finding the Fourth Proportional to 397,369.79, 548,353.62 and 225,299.33

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Solution

The fourth proportional to 397,369.79, 548,353.62 and 225,299.33 is: 310,903.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,369.79 : 548,353.62 = 225,299.33 : x
  2. Step 2: Convert to fraction form
    397,369.79/548,353.62 = 225,299.33/x
  3. Step 3: Cross multiply
    397,369.79x = 548,353.62 × 225,299.33
  4. Step 4: Simplify right side
    397,369.79x = 123,543,703,189.08
  5. Step 5: Solve for x
    x = 123,543,703,189.08/397,369.79
  6. Step 6: Final answer
    x = 310,903.61

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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.