Home / 397,508.22-548,869.25-305,481.74

Finding the Fourth Proportional to 397,508.22, 548,869.25 and 305,481.74

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Solution

The fourth proportional to 397,508.22, 548,869.25 and 305,481.74 is: 421,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,508.22 : 548,869.25 = 305,481.74 : x
  2. Step 2: Convert to fraction form
    397,508.22/548,869.25 = 305,481.74/x
  3. Step 3: Cross multiply
    397,508.22x = 548,869.25 × 305,481.74
  4. Step 4: Simplify right side
    397,508.22x = 167,669,535,069.73
  5. Step 5: Solve for x
    x = 167,669,535,069.73/397,508.22
  6. Step 6: Final answer
    x = 421,801.43

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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.