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Finding the Fourth Proportional to 321,659.11, 481,879.62 and 214,720.58

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Solution

The fourth proportional to 321,659.11, 481,879.62 and 214,720.58 is: 321,674.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,659.11 : 481,879.62 = 214,720.58 : x
  2. Step 2: Convert to fraction form
    321,659.11/481,879.62 = 214,720.58/x
  3. Step 3: Cross multiply
    321,659.11x = 481,879.62 × 214,720.58
  4. Step 4: Simplify right side
    321,659.11x = 103,469,471,496.58
  5. Step 5: Solve for x
    x = 103,469,471,496.58/321,659.11
  6. Step 6: Final answer
    x = 321,674.31

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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.