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Finding the Fourth Proportional to 219,211.90, 328,635.60 and 92,949.10

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Solution

The fourth proportional to 219,211.90, 328,635.60 and 92,949.10 is: 139,346.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,211.90 : 328,635.60 = 92,949.10 : x
  2. Step 2: Convert to fraction form
    219,211.90/328,635.60 = 92,949.10/x
  3. Step 3: Cross multiply
    219,211.90x = 328,635.60 × 92,949.10
  4. Step 4: Simplify right side
    219,211.90x = 30,546,383,247.96
  5. Step 5: Solve for x
    x = 30,546,383,247.96/219,211.90
  6. Step 6: Final answer
    x = 139,346.37

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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.