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Finding the Fourth Proportional to 326,789.64, 490,604.25 and 251,957.31

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Solution

The fourth proportional to 326,789.64, 490,604.25 and 251,957.31 is: 378,259.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,789.64 : 490,604.25 = 251,957.31 : x
  2. Step 2: Convert to fraction form
    326,789.64/490,604.25 = 251,957.31/x
  3. Step 3: Cross multiply
    326,789.64x = 490,604.25 × 251,957.31
  4. Step 4: Simplify right side
    326,789.64x = 123,611,327,104.57
  5. Step 5: Solve for x
    x = 123,611,327,104.57/326,789.64
  6. Step 6: Final answer
    x = 378,259.63

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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.