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Finding the Fourth Proportional to 399,910.44, 599,744.54 and 210,268.64

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Solution

The fourth proportional to 399,910.44, 599,744.54 and 210,268.64 is: 315,339.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,910.44 : 599,744.54 = 210,268.64 : x
  2. Step 2: Convert to fraction form
    399,910.44/599,744.54 = 210,268.64/x
  3. Step 3: Cross multiply
    399,910.44x = 599,744.54 × 210,268.64
  4. Step 4: Simplify right side
    399,910.44x = 126,107,468,773.23
  5. Step 5: Solve for x
    x = 126,107,468,773.23/399,910.44
  6. Step 6: Final answer
    x = 315,339.28

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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.