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Finding the Fourth Proportional to 338,188.80, 465,638.32 and 287,095.64

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Solution

The fourth proportional to 338,188.80, 465,638.32 and 287,095.64 is: 395,290.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,188.80 : 465,638.32 = 287,095.64 : x
  2. Step 2: Convert to fraction form
    338,188.80/465,638.32 = 287,095.64/x
  3. Step 3: Cross multiply
    338,188.80x = 465,638.32 × 287,095.64
  4. Step 4: Simplify right side
    338,188.80x = 133,682,731,488.93
  5. Step 5: Solve for x
    x = 133,682,731,488.93/338,188.80
  6. Step 6: Final answer
    x = 395,290.24

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