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Finding the Fourth Proportional to 219,638.44, 329,478.18 and 61,866.64

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Solution

The fourth proportional to 219,638.44, 329,478.18 and 61,866.64 is: 92,805.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,638.44 : 329,478.18 = 61,866.64 : x
  2. Step 2: Convert to fraction form
    219,638.44/329,478.18 = 61,866.64/x
  3. Step 3: Cross multiply
    219,638.44x = 329,478.18 × 61,866.64
  4. Step 4: Simplify right side
    219,638.44x = 20,383,707,949.92
  5. Step 5: Solve for x
    x = 20,383,707,949.92/219,638.44
  6. Step 6: Final answer
    x = 92,805.74

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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.