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Finding the Fourth Proportional to 219,398.78, 329,110.92 and 61,639.52

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Solution

The fourth proportional to 219,398.78, 329,110.92 and 61,639.52 is: 92,462.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,398.78 : 329,110.92 = 61,639.52 : x
  2. Step 2: Convert to fraction form
    219,398.78/329,110.92 = 61,639.52/x
  3. Step 3: Cross multiply
    219,398.78x = 329,110.92 × 61,639.52
  4. Step 4: Simplify right side
    219,398.78x = 20,286,239,135.56
  5. Step 5: Solve for x
    x = 20,286,239,135.56/219,398.78
  6. Step 6: Final answer
    x = 92,462.86

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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.