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Finding the Fourth Proportional to 664,280.80, 996,421.20 and 165,644.80

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Solution

The fourth proportional to 664,280.80, 996,421.20 and 165,644.80 is: 248,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,280.80 : 996,421.20 = 165,644.80 : x
  2. Step 2: Convert to fraction form
    664,280.80/996,421.20 = 165,644.80/x
  3. Step 3: Cross multiply
    664,280.80x = 996,421.20 × 165,644.80
  4. Step 4: Simplify right side
    664,280.80x = 165,051,990,389.76
  5. Step 5: Solve for x
    x = 165,051,990,389.76/664,280.80
  6. Step 6: Final answer
    x = 248,467.20

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