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Finding the Fourth Proportional to 318,058.97, 438,985.20 and 188,972.60

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Solution

The fourth proportional to 318,058.97, 438,985.20 and 188,972.60 is: 260,820.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,058.97 : 438,985.20 = 188,972.60 : x
  2. Step 2: Convert to fraction form
    318,058.97/438,985.20 = 188,972.60/x
  3. Step 3: Cross multiply
    318,058.97x = 438,985.20 × 188,972.60
  4. Step 4: Simplify right side
    318,058.97x = 82,956,174,605.52
  5. Step 5: Solve for x
    x = 82,956,174,605.52/318,058.97
  6. Step 6: Final answer
    x = 260,820.11

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