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Finding the Fourth Proportional to 358,863.89, 495,243.38 and 205,930.08

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Solution

The fourth proportional to 358,863.89, 495,243.38 and 205,930.08 is: 284,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,863.89 : 495,243.38 = 205,930.08 : x
  2. Step 2: Convert to fraction form
    358,863.89/495,243.38 = 205,930.08/x
  3. Step 3: Cross multiply
    358,863.89x = 495,243.38 × 205,930.08
  4. Step 4: Simplify right side
    358,863.89x = 101,985,509,377.70
  5. Step 5: Solve for x
    x = 101,985,509,377.70/358,863.89
  6. Step 6: Final answer
    x = 284,189.95

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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.