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Finding the Fourth Proportional to 299,231.20, 448,190.70 and 259,865.20

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Solution

The fourth proportional to 299,231.20, 448,190.70 and 259,865.20 is: 389,228.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,231.20 : 448,190.70 = 259,865.20 : x
  2. Step 2: Convert to fraction form
    299,231.20/448,190.70 = 259,865.20/x
  3. Step 3: Cross multiply
    299,231.20x = 448,190.70 × 259,865.20
  4. Step 4: Simplify right side
    299,231.20x = 116,469,165,893.64
  5. Step 5: Solve for x
    x = 116,469,165,893.64/299,231.20
  6. Step 6: Final answer
    x = 389,228.01

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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.