Home / 397,748.88-548,769.60-225,638.28

Finding the Fourth Proportional to 397,748.88, 548,769.60 and 225,638.28

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Solution

The fourth proportional to 397,748.88, 548,769.60 and 225,638.28 is: 311,310.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,748.88 : 548,769.60 = 225,638.28 : x
  2. Step 2: Convert to fraction form
    397,748.88/548,769.60 = 225,638.28/x
  3. Step 3: Cross multiply
    397,748.88x = 548,769.60 × 225,638.28
  4. Step 4: Simplify right side
    397,748.88x = 123,823,428,660.29
  5. Step 5: Solve for x
    x = 123,823,428,660.29/397,748.88
  6. Step 6: Final answer
    x = 311,310.57

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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.