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Finding the Fourth Proportional to 219,665.39, 329,121.90 and 119,895.57

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Solution

The fourth proportional to 219,665.39, 329,121.90 and 119,895.57 is: 179,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,665.39 : 329,121.90 = 119,895.57 : x
  2. Step 2: Convert to fraction form
    219,665.39/329,121.90 = 119,895.57/x
  3. Step 3: Cross multiply
    219,665.39x = 329,121.90 × 119,895.57
  4. Step 4: Simplify right side
    219,665.39x = 39,460,257,799.98
  5. Step 5: Solve for x
    x = 39,460,257,799.98/219,665.39
  6. Step 6: Final answer
    x = 179,638.03

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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.