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Finding the Fourth Proportional to 217,302.21, 299,876.11 and 121,808.93

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Solution

The fourth proportional to 217,302.21, 299,876.11 and 121,808.93 is: 168,095.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,302.21 : 299,876.11 = 121,808.93 : x
  2. Step 2: Convert to fraction form
    217,302.21/299,876.11 = 121,808.93/x
  3. Step 3: Cross multiply
    217,302.21x = 299,876.11 × 121,808.93
  4. Step 4: Simplify right side
    217,302.21x = 36,527,586,287.76
  5. Step 5: Solve for x
    x = 36,527,586,287.76/217,302.21
  6. Step 6: Final answer
    x = 168,095.79

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