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Finding the Fourth Proportional to 219,640.20, 329,514.30 and 61,866.60

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Solution

The fourth proportional to 219,640.20, 329,514.30 and 61,866.60 is: 92,815.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,640.20 : 329,514.30 = 61,866.60 : x
  2. Step 2: Convert to fraction form
    219,640.20/329,514.30 = 61,866.60/x
  3. Step 3: Cross multiply
    219,640.20x = 329,514.30 × 61,866.60
  4. Step 4: Simplify right side
    219,640.20x = 20,385,929,392.38
  5. Step 5: Solve for x
    x = 20,385,929,392.38/219,640.20
  6. Step 6: Final answer
    x = 92,815.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.