Home / 397,255.30-548,222.92-215,979.42

Finding the Fourth Proportional to 397,255.30, 548,222.92 and 215,979.42

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Solution

The fourth proportional to 397,255.30, 548,222.92 and 215,979.42 is: 298,057.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,255.30 : 548,222.92 = 215,979.42 : x
  2. Step 2: Convert to fraction form
    397,255.30/548,222.92 = 215,979.42/x
  3. Step 3: Cross multiply
    397,255.30x = 548,222.92 × 215,979.42
  4. Step 4: Simplify right side
    397,255.30x = 118,404,869,808.19
  5. Step 5: Solve for x
    x = 118,404,869,808.19/397,255.30
  6. Step 6: Final answer
    x = 298,057.37

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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.