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Finding the Fourth Proportional to 258,302.79, 387,453.65 and 71,313.75

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Solution

The fourth proportional to 258,302.79, 387,453.65 and 71,313.75 is: 106,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,302.79 : 387,453.65 = 71,313.75 : x
  2. Step 2: Convert to fraction form
    258,302.79/387,453.65 = 71,313.75/x
  3. Step 3: Cross multiply
    258,302.79x = 387,453.65 × 71,313.75
  4. Step 4: Simplify right side
    258,302.79x = 27,630,772,376.12
  5. Step 5: Solve for x
    x = 27,630,772,376.12/258,302.79
  6. Step 6: Final answer
    x = 106,970.48

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