Home / 397,266.45-548,238.27-215,990.61

Finding the Fourth Proportional to 397,266.45, 548,238.27 and 215,990.61

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Solution

The fourth proportional to 397,266.45, 548,238.27 and 215,990.61 is: 298,072.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,266.45 : 548,238.27 = 215,990.61 : x
  2. Step 2: Convert to fraction form
    397,266.45/548,238.27 = 215,990.61/x
  3. Step 3: Cross multiply
    397,266.45x = 548,238.27 × 215,990.61
  4. Step 4: Simplify right side
    397,266.45x = 118,414,318,362.65
  5. Step 5: Solve for x
    x = 118,414,318,362.65/397,266.45
  6. Step 6: Final answer
    x = 298,072.79

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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.