Home / 397,738.03-548,890.82-225,663.21

Finding the Fourth Proportional to 397,738.03, 548,890.82 and 225,663.21

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Solution

The fourth proportional to 397,738.03, 548,890.82 and 225,663.21 is: 311,422.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,738.03 : 548,890.82 = 225,663.21 : x
  2. Step 2: Convert to fraction form
    397,738.03/548,890.82 = 225,663.21/x
  3. Step 3: Cross multiply
    397,738.03x = 548,890.82 × 225,663.21
  4. Step 4: Simplify right side
    397,738.03x = 123,864,464,944.89
  5. Step 5: Solve for x
    x = 123,864,464,944.89/397,738.03
  6. Step 6: Final answer
    x = 311,422.23

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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.