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Finding the Fourth Proportional to 280,616.70, 421,109.58 and 103,125.25

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Solution

The fourth proportional to 280,616.70, 421,109.58 and 103,125.25 is: 154,755.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,616.70 : 421,109.58 = 103,125.25 : x
  2. Step 2: Convert to fraction form
    280,616.70/421,109.58 = 103,125.25/x
  3. Step 3: Cross multiply
    280,616.70x = 421,109.58 × 103,125.25
  4. Step 4: Simplify right side
    280,616.70x = 43,427,031,628.00
  5. Step 5: Solve for x
    x = 43,427,031,628.00/280,616.70
  6. Step 6: Final answer
    x = 154,755.69

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