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Finding the Fourth Proportional to 216,221.64, 298,385.76 and 120,728.28

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Solution

The fourth proportional to 216,221.64, 298,385.76 and 120,728.28 is: 166,604.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,221.64 : 298,385.76 = 120,728.28 : x
  2. Step 2: Convert to fraction form
    216,221.64/298,385.76 = 120,728.28/x
  3. Step 3: Cross multiply
    216,221.64x = 298,385.76 × 120,728.28
  4. Step 4: Simplify right side
    216,221.64x = 36,023,599,581.29
  5. Step 5: Solve for x
    x = 36,023,599,581.29/216,221.64
  6. Step 6: Final answer
    x = 166,604.97

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