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Finding the Fourth Proportional to 289,847.31, 399,988.92 and 160,805.36

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Solution

The fourth proportional to 289,847.31, 399,988.92 and 160,805.36 is: 221,911.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,847.31 : 399,988.92 = 160,805.36 : x
  2. Step 2: Convert to fraction form
    289,847.31/399,988.92 = 160,805.36/x
  3. Step 3: Cross multiply
    289,847.31x = 399,988.92 × 160,805.36
  4. Step 4: Simplify right side
    289,847.31x = 64,320,362,276.61
  5. Step 5: Solve for x
    x = 64,320,362,276.61/289,847.31
  6. Step 6: Final answer
    x = 221,911.19

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