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Finding the Fourth Proportional to 220,124.14, 330,236.64 and 79,882.78

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Solution

The fourth proportional to 220,124.14, 330,236.64 and 79,882.78 is: 119,842.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,124.14 : 330,236.64 = 79,882.78 : x
  2. Step 2: Convert to fraction form
    220,124.14/330,236.64 = 79,882.78/x
  3. Step 3: Cross multiply
    220,124.14x = 330,236.64 × 79,882.78
  4. Step 4: Simplify right side
    220,124.14x = 26,380,220,861.06
  5. Step 5: Solve for x
    x = 26,380,220,861.06/220,124.14
  6. Step 6: Final answer
    x = 119,842.47

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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.