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Finding the Fourth Proportional to 268,832.80, 403,249.20 and 81,844.30

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Solution

The fourth proportional to 268,832.80, 403,249.20 and 81,844.30 is: 122,766.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,832.80 : 403,249.20 = 81,844.30 : x
  2. Step 2: Convert to fraction form
    268,832.80/403,249.20 = 81,844.30/x
  3. Step 3: Cross multiply
    268,832.80x = 403,249.20 × 81,844.30
  4. Step 4: Simplify right side
    268,832.80x = 33,003,648,499.56
  5. Step 5: Solve for x
    x = 33,003,648,499.56/268,832.80
  6. Step 6: Final answer
    x = 122,766.45

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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.