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Finding the Fourth Proportional to 425,930.40, 587,865.60 and 256,219.20

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Solution

The fourth proportional to 425,930.40, 587,865.60 and 256,219.20 is: 353,631.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,930.40 : 587,865.60 = 256,219.20 : x
  2. Step 2: Convert to fraction form
    425,930.40/587,865.60 = 256,219.20/x
  3. Step 3: Cross multiply
    425,930.40x = 587,865.60 × 256,219.20
  4. Step 4: Simplify right side
    425,930.40x = 150,622,453,739.52
  5. Step 5: Solve for x
    x = 150,622,453,739.52/425,930.40
  6. Step 6: Final answer
    x = 353,631.61

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