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Finding the Fourth Proportional to 220,469.06, 304,238.50 and 129,828.85

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Solution

The fourth proportional to 220,469.06, 304,238.50 and 129,828.85 is: 179,158.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,469.06 : 304,238.50 = 129,828.85 : x
  2. Step 2: Convert to fraction form
    220,469.06/304,238.50 = 129,828.85/x
  3. Step 3: Cross multiply
    220,469.06x = 304,238.50 × 129,828.85
  4. Step 4: Simplify right side
    220,469.06x = 39,498,933,495.56
  5. Step 5: Solve for x
    x = 39,498,933,495.56/220,469.06
  6. Step 6: Final answer
    x = 179,158.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.