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Finding the Fourth Proportional to 312,784.61, 431,643.06 and 169,544.61

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Solution

The fourth proportional to 312,784.61, 431,643.06 and 169,544.61 is: 233,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,784.61 : 431,643.06 = 169,544.61 : x
  2. Step 2: Convert to fraction form
    312,784.61/431,643.06 = 169,544.61/x
  3. Step 3: Cross multiply
    312,784.61x = 431,643.06 × 169,544.61
  4. Step 4: Simplify right side
    312,784.61x = 73,182,754,266.91
  5. Step 5: Solve for x
    x = 73,182,754,266.91/312,784.61
  6. Step 6: Final answer
    x = 233,971.73

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