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Finding the Fourth Proportional to 279,832.60, 419,625.06 and 80,107.48

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Solution

The fourth proportional to 279,832.60, 419,625.06 and 80,107.48 is: 120,125.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,832.60 : 419,625.06 = 80,107.48 : x
  2. Step 2: Convert to fraction form
    279,832.60/419,625.06 = 80,107.48/x
  3. Step 3: Cross multiply
    279,832.60x = 419,625.06 × 80,107.48
  4. Step 4: Simplify right side
    279,832.60x = 33,615,106,101.45
  5. Step 5: Solve for x
    x = 33,615,106,101.45/279,832.60
  6. Step 6: Final answer
    x = 120,125.77

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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.