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Finding the Fourth Proportional to 218,779.31, 328,224.32 and 61,007.78

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Solution

The fourth proportional to 218,779.31, 328,224.32 and 61,007.78 is: 91,527.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,779.31 : 328,224.32 = 61,007.78 : x
  2. Step 2: Convert to fraction form
    218,779.31/328,224.32 = 61,007.78/x
  3. Step 3: Cross multiply
    218,779.31x = 328,224.32 × 61,007.78
  4. Step 4: Simplify right side
    218,779.31x = 20,024,237,849.51
  5. Step 5: Solve for x
    x = 20,024,237,849.51/218,779.31
  6. Step 6: Final answer
    x = 91,527.11

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