Home / 481,309.44-664,318.53-320,171.28

Finding the Fourth Proportional to 481,309.44, 664,318.53 and 320,171.28

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Solution

The fourth proportional to 481,309.44, 664,318.53 and 320,171.28 is: 441,910.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,309.44 : 664,318.53 = 320,171.28 : x
  2. Step 2: Convert to fraction form
    481,309.44/664,318.53 = 320,171.28/x
  3. Step 3: Cross multiply
    481,309.44x = 664,318.53 × 320,171.28
  4. Step 4: Simplify right side
    481,309.44x = 212,695,714,077.82
  5. Step 5: Solve for x
    x = 212,695,714,077.82/481,309.44
  6. Step 6: Final answer
    x = 441,910.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.