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Finding the Fourth Proportional to 220,391.56, 304,138.83 and 119,789.56

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Solution

The fourth proportional to 220,391.56, 304,138.83 and 119,789.56 is: 165,308.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,391.56 : 304,138.83 = 119,789.56 : x
  2. Step 2: Convert to fraction form
    220,391.56/304,138.83 = 119,789.56/x
  3. Step 3: Cross multiply
    220,391.56x = 304,138.83 × 119,789.56
  4. Step 4: Simplify right side
    220,391.56x = 36,432,656,624.61
  5. Step 5: Solve for x
    x = 36,432,656,624.61/220,391.56
  6. Step 6: Final answer
    x = 165,308.77

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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.