Home / 219,731.17-329,628.34-67,940.09

Finding the Fourth Proportional to 219,731.17, 329,628.34 and 67,940.09

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Solution

The fourth proportional to 219,731.17, 329,628.34 and 67,940.09 is: 101,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,731.17 : 329,628.34 = 67,940.09 : x
  2. Step 2: Convert to fraction form
    219,731.17/329,628.34 = 67,940.09/x
  3. Step 3: Cross multiply
    219,731.17x = 329,628.34 × 67,940.09
  4. Step 4: Simplify right side
    219,731.17x = 22,394,977,098.31
  5. Step 5: Solve for x
    x = 22,394,977,098.31/219,731.17
  6. Step 6: Final answer
    x = 101,919.89

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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.