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Finding the Fourth Proportional to 312,741.12, 431,767.68 and 205,498.88

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Solution

The fourth proportional to 312,741.12, 431,767.68 and 205,498.88 is: 283,709.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,741.12 : 431,767.68 = 205,498.88 : x
  2. Step 2: Convert to fraction form
    312,741.12/431,767.68 = 205,498.88/x
  3. Step 3: Cross multiply
    312,741.12x = 431,767.68 × 205,498.88
  4. Step 4: Simplify right side
    312,741.12x = 88,727,774,660.20
  5. Step 5: Solve for x
    x = 88,727,774,660.20/312,741.12
  6. Step 6: Final answer
    x = 283,709.97

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