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Finding the Fourth Proportional to 305,531.54, 421,684.20 and 178,207.13

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Solution

The fourth proportional to 305,531.54, 421,684.20 and 178,207.13 is: 245,955.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,531.54 : 421,684.20 = 178,207.13 : x
  2. Step 2: Convert to fraction form
    305,531.54/421,684.20 = 178,207.13/x
  3. Step 3: Cross multiply
    305,531.54x = 421,684.20 × 178,207.13
  4. Step 4: Simplify right side
    305,531.54x = 75,147,131,048.35
  5. Step 5: Solve for x
    x = 75,147,131,048.35/305,531.54
  6. Step 6: Final answer
    x = 245,955.40

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