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Finding the Fourth Proportional to 455,311.60, 682,967.40 and 219,115.60

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Solution

The fourth proportional to 455,311.60, 682,967.40 and 219,115.60 is: 328,673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,311.60 : 682,967.40 = 219,115.60 : x
  2. Step 2: Convert to fraction form
    455,311.60/682,967.40 = 219,115.60/x
  3. Step 3: Cross multiply
    455,311.60x = 682,967.40 × 219,115.60
  4. Step 4: Simplify right side
    455,311.60x = 149,648,811,631.44
  5. Step 5: Solve for x
    x = 149,648,811,631.44/455,311.60
  6. Step 6: Final answer
    x = 328,673.40

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