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Finding the Fourth Proportional to 390,976.97, 539,387.84 and 237,892.43

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Solution

The fourth proportional to 390,976.97, 539,387.84 and 237,892.43 is: 328,193.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,976.97 : 539,387.84 = 237,892.43 : x
  2. Step 2: Convert to fraction form
    390,976.97/539,387.84 = 237,892.43/x
  3. Step 3: Cross multiply
    390,976.97x = 539,387.84 × 237,892.43
  4. Step 4: Simplify right side
    390,976.97x = 128,316,285,913.25
  5. Step 5: Solve for x
    x = 128,316,285,913.25/390,976.97
  6. Step 6: Final answer
    x = 328,193.98

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