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Finding the Fourth Proportional to 218,946.38, 328,417.61 and 69,186.69

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Solution

The fourth proportional to 218,946.38, 328,417.61 and 69,186.69 is: 103,779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,946.38 : 328,417.61 = 69,186.69 : x
  2. Step 2: Convert to fraction form
    218,946.38/328,417.61 = 69,186.69/x
  3. Step 3: Cross multiply
    218,946.38x = 328,417.61 × 69,186.69
  4. Step 4: Simplify right side
    218,946.38x = 22,722,127,027.68
  5. Step 5: Solve for x
    x = 22,722,127,027.68/218,946.38
  6. Step 6: Final answer
    x = 103,779.42

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