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Finding the Fourth Proportional to 321,324.80, 481,987.20 and 270,003.20

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Solution

The fourth proportional to 321,324.80, 481,987.20 and 270,003.20 is: 405,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,324.80 : 481,987.20 = 270,003.20 : x
  2. Step 2: Convert to fraction form
    321,324.80/481,987.20 = 270,003.20/x
  3. Step 3: Cross multiply
    321,324.80x = 481,987.20 × 270,003.20
  4. Step 4: Simplify right side
    321,324.80x = 130,138,086,359.04
  5. Step 5: Solve for x
    x = 130,138,086,359.04/321,324.80
  6. Step 6: Final answer
    x = 405,004.80

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1.5x scale

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.