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Finding the Fourth Proportional to 209,221.20, 313,486.20 and 178,117.20

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Solution

The fourth proportional to 209,221.20, 313,486.20 and 178,117.20 is: 266,881.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,221.20 : 313,486.20 = 178,117.20 : x
  2. Step 2: Convert to fraction form
    209,221.20/313,486.20 = 178,117.20/x
  3. Step 3: Cross multiply
    209,221.20x = 313,486.20 × 178,117.20
  4. Step 4: Simplify right side
    209,221.20x = 55,837,284,182.64
  5. Step 5: Solve for x
    x = 55,837,284,182.64/209,221.20
  6. Step 6: Final answer
    x = 266,881.58

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