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Finding the Fourth Proportional to 289,902.09, 434,853.10 and 170,141.28

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Solution

The fourth proportional to 289,902.09, 434,853.10 and 170,141.28 is: 255,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,902.09 : 434,853.10 = 170,141.28 : x
  2. Step 2: Convert to fraction form
    289,902.09/434,853.10 = 170,141.28/x
  3. Step 3: Cross multiply
    289,902.09x = 434,853.10 × 170,141.28
  4. Step 4: Simplify right side
    289,902.09x = 73,986,463,045.97
  5. Step 5: Solve for x
    x = 73,986,463,045.97/289,902.09
  6. Step 6: Final answer
    x = 255,211.90

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