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Finding the Fourth Proportional to 219,692.91, 329,539.38 and 79,418.73

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Solution

The fourth proportional to 219,692.91, 329,539.38 and 79,418.73 is: 119,128.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,692.91 : 329,539.38 = 79,418.73 : x
  2. Step 2: Convert to fraction form
    219,692.91/329,539.38 = 79,418.73/x
  3. Step 3: Cross multiply
    219,692.91x = 329,539.38 × 79,418.73
  4. Step 4: Simplify right side
    219,692.91x = 26,171,599,044.59
  5. Step 5: Solve for x
    x = 26,171,599,044.59/219,692.91
  6. Step 6: Final answer
    x = 119,128.10

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1.5x scale

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.