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Finding the Fourth Proportional to 639,658.37, 959,166.68 and 213,044.21

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Solution

The fourth proportional to 639,658.37, 959,166.68 and 213,044.21 is: 319,459.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,658.37 : 959,166.68 = 213,044.21 : x
  2. Step 2: Convert to fraction form
    639,658.37/959,166.68 = 213,044.21/x
  3. Step 3: Cross multiply
    639,658.37x = 959,166.68 × 213,044.21
  4. Step 4: Simplify right side
    639,658.37x = 204,344,901,737.87
  5. Step 5: Solve for x
    x = 204,344,901,737.87/639,658.37
  6. Step 6: Final answer
    x = 319,459.44

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