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Finding the Fourth Proportional to 421,199.98, 581,255.85 and 239,928.70

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Solution

The fourth proportional to 421,199.98, 581,255.85 and 239,928.70 is: 331,101.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,199.98 : 581,255.85 = 239,928.70 : x
  2. Step 2: Convert to fraction form
    421,199.98/581,255.85 = 239,928.70/x
  3. Step 3: Cross multiply
    421,199.98x = 581,255.85 × 239,928.70
  4. Step 4: Simplify right side
    421,199.98x = 139,459,960,457.90
  5. Step 5: Solve for x
    x = 139,459,960,457.90/421,199.98
  6. Step 6: Final answer
    x = 331,101.54

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