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Finding the Fourth Proportional to 403,738.80, 605,899.80 and 226,057.20

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Solution

The fourth proportional to 403,738.80, 605,899.80 and 226,057.20 is: 339,249.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,738.80 : 605,899.80 = 226,057.20 : x
  2. Step 2: Convert to fraction form
    403,738.80/605,899.80 = 226,057.20/x
  3. Step 3: Cross multiply
    403,738.80x = 605,899.80 × 226,057.20
  4. Step 4: Simplify right side
    403,738.80x = 136,968,012,268.56
  5. Step 5: Solve for x
    x = 136,968,012,268.56/403,738.80
  6. Step 6: Final answer
    x = 339,249.07

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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.