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Finding the Fourth Proportional to 321,003.40, 481,505.10 and 269,393.80

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Solution

The fourth proportional to 321,003.40, 481,505.10 and 269,393.80 is: 404,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,003.40 : 481,505.10 = 269,393.80 : x
  2. Step 2: Convert to fraction form
    321,003.40/481,505.10 = 269,393.80/x
  3. Step 3: Cross multiply
    321,003.40x = 481,505.10 × 269,393.80
  4. Step 4: Simplify right side
    321,003.40x = 129,714,488,608.38
  5. Step 5: Solve for x
    x = 129,714,488,608.38/321,003.40
  6. Step 6: Final answer
    x = 404,090.70

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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.