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Finding the Fourth Proportional to 312,647.10, 431,461.02 and 191,855.12

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Solution

The fourth proportional to 312,647.10, 431,461.02 and 191,855.12 is: 264,764.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,647.10 : 431,461.02 = 191,855.12 : x
  2. Step 2: Convert to fraction form
    312,647.10/431,461.02 = 191,855.12/x
  3. Step 3: Cross multiply
    312,647.10x = 431,461.02 × 191,855.12
  4. Step 4: Simplify right side
    312,647.10x = 82,778,005,767.42
  5. Step 5: Solve for x
    x = 82,778,005,767.42/312,647.10
  6. Step 6: Final answer
    x = 264,764.99

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