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Finding the Fourth Proportional to 279,628.92, 419,093.10 and 220,230

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Solution

The fourth proportional to 279,628.92, 419,093.10 and 220,230 is: 330,069.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,628.92 : 419,093.10 = 220,230 : x
  2. Step 2: Convert to fraction form
    279,628.92/419,093.10 = 220,230/x
  3. Step 3: Cross multiply
    279,628.92x = 419,093.10 × 220,230
  4. Step 4: Simplify right side
    279,628.92x = 92,296,873,413
  5. Step 5: Solve for x
    x = 92,296,873,413/279,628.92
  6. Step 6: Final answer
    x = 330,069.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.