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Finding the Fourth Proportional to 280,298.70, 420,198.06 and 102,764.34

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Solution

The fourth proportional to 280,298.70, 420,198.06 and 102,764.34 is: 154,054.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,298.70 : 420,198.06 = 102,764.34 : x
  2. Step 2: Convert to fraction form
    280,298.70/420,198.06 = 102,764.34/x
  3. Step 3: Cross multiply
    280,298.70x = 420,198.06 × 102,764.34
  4. Step 4: Simplify right side
    280,298.70x = 43,181,376,305.18
  5. Step 5: Solve for x
    x = 43,181,376,305.18/280,298.70
  6. Step 6: Final answer
    x = 154,054.86

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