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Finding the Fourth Proportional to 320,550.72, 442,211.04 and 207,409.92

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Solution

The fourth proportional to 320,550.72, 442,211.04 and 207,409.92 is: 286,129.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,550.72 : 442,211.04 = 207,409.92 : x
  2. Step 2: Convert to fraction form
    320,550.72/442,211.04 = 207,409.92/x
  3. Step 3: Cross multiply
    320,550.72x = 442,211.04 × 207,409.92
  4. Step 4: Simplify right side
    320,550.72x = 91,718,956,429.52
  5. Step 5: Solve for x
    x = 91,718,956,429.52/320,550.72
  6. Step 6: Final answer
    x = 286,129.31

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