Home / 397,738.78-548,891.86-225,663.96

Finding the Fourth Proportional to 397,738.78, 548,891.86 and 225,663.96

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Solution

The fourth proportional to 397,738.78, 548,891.86 and 225,663.96 is: 311,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,738.78 : 548,891.86 = 225,663.96 : x
  2. Step 2: Convert to fraction form
    397,738.78/548,891.86 = 225,663.96/x
  3. Step 3: Cross multiply
    397,738.78x = 548,891.86 × 225,663.96
  4. Step 4: Simplify right side
    397,738.78x = 123,865,110,175.21
  5. Step 5: Solve for x
    x = 123,865,110,175.21/397,738.78
  6. Step 6: Final answer
    x = 311,423.27

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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.