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Finding the Fourth Proportional to 326,060.80, 489,091.20 and 136,488.40

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Solution

The fourth proportional to 326,060.80, 489,091.20 and 136,488.40 is: 204,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,060.80 : 489,091.20 = 136,488.40 : x
  2. Step 2: Convert to fraction form
    326,060.80/489,091.20 = 136,488.40/x
  3. Step 3: Cross multiply
    326,060.80x = 489,091.20 × 136,488.40
  4. Step 4: Simplify right side
    326,060.80x = 66,755,275,342.08
  5. Step 5: Solve for x
    x = 66,755,275,342.08/326,060.80
  6. Step 6: Final answer
    x = 204,732.60

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