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Finding the Fourth Proportional to 209,858.60, 314,860.80 and 91,614.80

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Solution

The fourth proportional to 209,858.60, 314,860.80 and 91,614.80 is: 137,454.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,858.60 : 314,860.80 = 91,614.80 : x
  2. Step 2: Convert to fraction form
    209,858.60/314,860.80 = 91,614.80/x
  3. Step 3: Cross multiply
    209,858.60x = 314,860.80 × 91,614.80
  4. Step 4: Simplify right side
    209,858.60x = 28,845,909,219.84
  5. Step 5: Solve for x
    x = 28,845,909,219.84/209,858.60
  6. Step 6: Final answer
    x = 137,454.02

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