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Finding the Fourth Proportional to 219,910.10, 329,821.95 and 72,166.10

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Solution

The fourth proportional to 219,910.10, 329,821.95 and 72,166.10 is: 108,234.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,910.10 : 329,821.95 = 72,166.10 : x
  2. Step 2: Convert to fraction form
    219,910.10/329,821.95 = 72,166.10/x
  3. Step 3: Cross multiply
    219,910.10x = 329,821.95 × 72,166.10
  4. Step 4: Simplify right side
    219,910.10x = 23,801,963,825.90
  5. Step 5: Solve for x
    x = 23,801,963,825.90/219,910.10
  6. Step 6: Final answer
    x = 108,234.97

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1.5x scale

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.