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Finding the Fourth Proportional to 386,702.04, 533,652.45 and 216,939.81

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Solution

The fourth proportional to 386,702.04, 533,652.45 and 216,939.81 is: 299,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,702.04 : 533,652.45 = 216,939.81 : x
  2. Step 2: Convert to fraction form
    386,702.04/533,652.45 = 216,939.81/x
  3. Step 3: Cross multiply
    386,702.04x = 533,652.45 × 216,939.81
  4. Step 4: Simplify right side
    386,702.04x = 115,770,458,440.77
  5. Step 5: Solve for x
    x = 115,770,458,440.77/386,702.04
  6. Step 6: Final answer
    x = 299,378.97

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