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Finding the Fourth Proportional to 228,315.28, 342,387.78 and 78,513.16

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Solution

The fourth proportional to 228,315.28, 342,387.78 and 78,513.16 is: 117,740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,315.28 : 342,387.78 = 78,513.16 : x
  2. Step 2: Convert to fraction form
    228,315.28/342,387.78 = 78,513.16/x
  3. Step 3: Cross multiply
    228,315.28x = 342,387.78 × 78,513.16
  4. Step 4: Simplify right side
    228,315.28x = 26,881,946,553.18
  5. Step 5: Solve for x
    x = 26,881,946,553.18/228,315.28
  6. Step 6: Final answer
    x = 117,740.46

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