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Finding the Fourth Proportional to 219,553.76, 329,856 and 140,821.76

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Solution

The fourth proportional to 219,553.76, 329,856 and 140,821.76 is: 211,569.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,553.76 : 329,856 = 140,821.76 : x
  2. Step 2: Convert to fraction form
    219,553.76/329,856 = 140,821.76/x
  3. Step 3: Cross multiply
    219,553.76x = 329,856 × 140,821.76
  4. Step 4: Simplify right side
    219,553.76x = 46,450,902,466.56
  5. Step 5: Solve for x
    x = 46,450,902,466.56/219,553.76
  6. Step 6: Final answer
    x = 211,569.61

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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.