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Finding the Fourth Proportional to 256,615.94, 384,899.16 and 79,075.28

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Solution

The fourth proportional to 256,615.94, 384,899.16 and 79,075.28 is: 118,605.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,615.94 : 384,899.16 = 79,075.28 : x
  2. Step 2: Convert to fraction form
    256,615.94/384,899.16 = 79,075.28/x
  3. Step 3: Cross multiply
    256,615.94x = 384,899.16 × 79,075.28
  4. Step 4: Simplify right side
    256,615.94x = 30,436,007,220.80
  5. Step 5: Solve for x
    x = 30,436,007,220.80/256,615.94
  6. Step 6: Final answer
    x = 118,605.29

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