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Finding the Fourth Proportional to 398,994.20, 550,609.17 and 226,912.23

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Solution

The fourth proportional to 398,994.20, 550,609.17 and 226,912.23 is: 313,137.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,994.20 : 550,609.17 = 226,912.23 : x
  2. Step 2: Convert to fraction form
    398,994.20/550,609.17 = 226,912.23/x
  3. Step 3: Cross multiply
    398,994.20x = 550,609.17 × 226,912.23
  4. Step 4: Simplify right side
    398,994.20x = 124,939,954,623.15
  5. Step 5: Solve for x
    x = 124,939,954,623.15/398,994.20
  6. Step 6: Final answer
    x = 313,137.27

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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.