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Finding the Fourth Proportional to 487,217.94, 730,886.31 and 206,640.42

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Solution

The fourth proportional to 487,217.94, 730,886.31 and 206,640.42 is: 309,985.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,217.94 : 730,886.31 = 206,640.42 : x
  2. Step 2: Convert to fraction form
    487,217.94/730,886.31 = 206,640.42/x
  3. Step 3: Cross multiply
    487,217.94x = 730,886.31 × 206,640.42
  4. Step 4: Simplify right side
    487,217.94x = 151,030,654,070.65
  5. Step 5: Solve for x
    x = 151,030,654,070.65/487,217.94
  6. Step 6: Final answer
    x = 309,985.82

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