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Finding the Fourth Proportional to 300,488.81, 450,663.25 and 140,675

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Solution

The fourth proportional to 300,488.81, 450,663.25 and 140,675 is: 210,979.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,488.81 : 450,663.25 = 140,675 : x
  2. Step 2: Convert to fraction form
    300,488.81/450,663.25 = 140,675/x
  3. Step 3: Cross multiply
    300,488.81x = 450,663.25 × 140,675
  4. Step 4: Simplify right side
    300,488.81x = 63,397,052,693.75
  5. Step 5: Solve for x
    x = 63,397,052,693.75/300,488.81
  6. Step 6: Final answer
    x = 210,979.75

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