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Finding the Fourth Proportional to 293,387.64, 440,231.52 and 139,687.58

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Solution

The fourth proportional to 293,387.64, 440,231.52 and 139,687.58 is: 209,602.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,387.64 : 440,231.52 = 139,687.58 : x
  2. Step 2: Convert to fraction form
    293,387.64/440,231.52 = 139,687.58/x
  3. Step 3: Cross multiply
    293,387.64x = 440,231.52 × 139,687.58
  4. Step 4: Simplify right side
    293,387.64x = 61,494,875,668.52
  5. Step 5: Solve for x
    x = 61,494,875,668.52/293,387.64
  6. Step 6: Final answer
    x = 209,602.82

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