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Finding the Fourth Proportional to 279,629.92, 419,094.60 and 220,231

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Solution

The fourth proportional to 279,629.92, 419,094.60 and 220,231 is: 330,070.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,629.92 : 419,094.60 = 220,231 : x
  2. Step 2: Convert to fraction form
    279,629.92/419,094.60 = 220,231/x
  3. Step 3: Cross multiply
    279,629.92x = 419,094.60 × 220,231
  4. Step 4: Simplify right side
    279,629.92x = 92,297,622,852.60
  5. Step 5: Solve for x
    x = 92,297,622,852.60/279,629.92
  6. Step 6: Final answer
    x = 330,070.63

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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.