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Finding the Fourth Proportional to 280,181.80, 420,275.75 and 80,503.84

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Solution

The fourth proportional to 280,181.80, 420,275.75 and 80,503.84 is: 120,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,181.80 : 420,275.75 = 80,503.84 : x
  2. Step 2: Convert to fraction form
    280,181.80/420,275.75 = 80,503.84/x
  3. Step 3: Cross multiply
    280,181.80x = 420,275.75 × 80,503.84
  4. Step 4: Simplify right side
    280,181.80x = 33,833,811,733.88
  5. Step 5: Solve for x
    x = 33,833,811,733.88/280,181.80
  6. Step 6: Final answer
    x = 120,756.64

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