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Finding the Fourth Proportional to 311,698.64, 429,944.66 and 216,170.48

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Solution

The fourth proportional to 311,698.64, 429,944.66 and 216,170.48 is: 298,176.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,698.64 : 429,944.66 = 216,170.48 : x
  2. Step 2: Convert to fraction form
    311,698.64/429,944.66 = 216,170.48/x
  3. Step 3: Cross multiply
    311,698.64x = 429,944.66 × 216,170.48
  4. Step 4: Simplify right side
    311,698.64x = 92,941,343,525.64
  5. Step 5: Solve for x
    x = 92,941,343,525.64/311,698.64
  6. Step 6: Final answer
    x = 298,176.93

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