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Finding the Fourth Proportional to 399,249.46, 550,964.37 and 220,401.46

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Solution

The fourth proportional to 399,249.46, 550,964.37 and 220,401.46 is: 304,154.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,249.46 : 550,964.37 = 220,401.46 : x
  2. Step 2: Convert to fraction form
    399,249.46/550,964.37 = 220,401.46/x
  3. Step 3: Cross multiply
    399,249.46x = 550,964.37 × 220,401.46
  4. Step 4: Simplify right side
    399,249.46x = 121,433,351,555.98
  5. Step 5: Solve for x
    x = 121,433,351,555.98/399,249.46
  6. Step 6: Final answer
    x = 304,154.08

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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.