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Finding the Fourth Proportional to 205,814.20, 308,721.30 and 72,698.80

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Solution

The fourth proportional to 205,814.20, 308,721.30 and 72,698.80 is: 109,048.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,814.20 : 308,721.30 = 72,698.80 : x
  2. Step 2: Convert to fraction form
    205,814.20/308,721.30 = 72,698.80/x
  3. Step 3: Cross multiply
    205,814.20x = 308,721.30 × 72,698.80
  4. Step 4: Simplify right side
    205,814.20x = 22,443,668,044.44
  5. Step 5: Solve for x
    x = 22,443,668,044.44/205,814.20
  6. Step 6: Final answer
    x = 109,048.20

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