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Finding the Fourth Proportional to 397,183.80, 548,111.40 and 225,134.28

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Solution

The fourth proportional to 397,183.80, 548,111.40 and 225,134.28 is: 310,684.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,183.80 : 548,111.40 = 225,134.28 : x
  2. Step 2: Convert to fraction form
    397,183.80/548,111.40 = 225,134.28/x
  3. Step 3: Cross multiply
    397,183.80x = 548,111.40 × 225,134.28
  4. Step 4: Simplify right side
    397,183.80x = 123,398,665,398.79
  5. Step 5: Solve for x
    x = 123,398,665,398.79/397,183.80
  6. Step 6: Final answer
    x = 310,684.03

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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.