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Finding the Fourth Proportional to 358,851.20, 495,286.37 and 205,992.72

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Solution

The fourth proportional to 358,851.20, 495,286.37 and 205,992.72 is: 284,311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,851.20 : 495,286.37 = 205,992.72 : x
  2. Step 2: Convert to fraction form
    358,851.20/495,286.37 = 205,992.72/x
  3. Step 3: Cross multiply
    358,851.20x = 495,286.37 × 205,992.72
  4. Step 4: Simplify right side
    358,851.20x = 102,025,385,505.26
  5. Step 5: Solve for x
    x = 102,025,385,505.26/358,851.20
  6. Step 6: Final answer
    x = 284,311.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.