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Finding the Fourth Proportional to 353,809.80, 530,842.68 and 218,715.84

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Solution

The fourth proportional to 353,809.80, 530,842.68 and 218,715.84 is: 328,152.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,809.80 : 530,842.68 = 218,715.84 : x
  2. Step 2: Convert to fraction form
    353,809.80/530,842.68 = 218,715.84/x
  3. Step 3: Cross multiply
    353,809.80x = 530,842.68 × 218,715.84
  4. Step 4: Simplify right side
    353,809.80x = 116,103,702,664.05
  5. Step 5: Solve for x
    x = 116,103,702,664.05/353,809.80
  6. Step 6: Final answer
    x = 328,152.87

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