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Finding the Fourth Proportional to 379,434.72, 523,612.48 and 209,665.12

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Solution

The fourth proportional to 379,434.72, 523,612.48 and 209,665.12 is: 289,333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,434.72 : 523,612.48 = 209,665.12 : x
  2. Step 2: Convert to fraction form
    379,434.72/523,612.48 = 209,665.12/x
  3. Step 3: Cross multiply
    379,434.72x = 523,612.48 × 209,665.12
  4. Step 4: Simplify right side
    379,434.72x = 109,783,273,452.70
  5. Step 5: Solve for x
    x = 109,783,273,452.70/379,434.72
  6. Step 6: Final answer
    x = 289,333.76

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