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Finding the Fourth Proportional to 258,259.78, 356,395.98 and 143,538.67

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Solution

The fourth proportional to 258,259.78, 356,395.98 and 143,538.67 is: 198,081.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,259.78 : 356,395.98 = 143,538.67 : x
  2. Step 2: Convert to fraction form
    258,259.78/356,395.98 = 143,538.67/x
  3. Step 3: Cross multiply
    258,259.78x = 356,395.98 × 143,538.67
  4. Step 4: Simplify right side
    258,259.78x = 51,156,604,962.55
  5. Step 5: Solve for x
    x = 51,156,604,962.55/258,259.78
  6. Step 6: Final answer
    x = 198,081.97

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