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Finding the Fourth Proportional to 442,389.47, 663,582.14 and 138,805.85

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Solution

The fourth proportional to 442,389.47, 663,582.14 and 138,805.85 is: 208,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,389.47 : 663,582.14 = 138,805.85 : x
  2. Step 2: Convert to fraction form
    442,389.47/663,582.14 = 138,805.85/x
  3. Step 3: Cross multiply
    442,389.47x = 663,582.14 × 138,805.85
  4. Step 4: Simplify right side
    442,389.47x = 92,109,084,472.97
  5. Step 5: Solve for x
    x = 92,109,084,472.97/442,389.47
  6. Step 6: Final answer
    x = 208,208.13

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