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Finding the Fourth Proportional to 211,724.80, 317,817.60 and 118,412.80

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Solution

The fourth proportional to 211,724.80, 317,817.60 and 118,412.80 is: 177,748.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,724.80 : 317,817.60 = 118,412.80 : x
  2. Step 2: Convert to fraction form
    211,724.80/317,817.60 = 118,412.80/x
  3. Step 3: Cross multiply
    211,724.80x = 317,817.60 × 118,412.80
  4. Step 4: Simplify right side
    211,724.80x = 37,633,671,905.28
  5. Step 5: Solve for x
    x = 37,633,671,905.28/211,724.80
  6. Step 6: Final answer
    x = 177,748.06

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