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Finding the Fourth Proportional to 247,215.40, 370,736.70 and 128,847.40

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Solution

The fourth proportional to 247,215.40, 370,736.70 and 128,847.40 is: 193,226.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,215.40 : 370,736.70 = 128,847.40 : x
  2. Step 2: Convert to fraction form
    247,215.40/370,736.70 = 128,847.40/x
  3. Step 3: Cross multiply
    247,215.40x = 370,736.70 × 128,847.40
  4. Step 4: Simplify right side
    247,215.40x = 47,768,459,879.58
  5. Step 5: Solve for x
    x = 47,768,459,879.58/247,215.40
  6. Step 6: Final answer
    x = 193,226.07

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