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Finding the Fourth Proportional to 219,692.88, 329,564.92 and 79,517.52

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Solution

The fourth proportional to 219,692.88, 329,564.92 and 79,517.52 is: 119,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,692.88 : 329,564.92 = 79,517.52 : x
  2. Step 2: Convert to fraction form
    219,692.88/329,564.92 = 79,517.52/x
  3. Step 3: Cross multiply
    219,692.88x = 329,564.92 × 79,517.52
  4. Step 4: Simplify right side
    219,692.88x = 26,206,185,117.40
  5. Step 5: Solve for x
    x = 26,206,185,117.40/219,692.88
  6. Step 6: Final answer
    x = 119,285.55

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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.