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Finding the Fourth Proportional to 312,660.20, 468,990.48 and 219,581.48

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Solution

The fourth proportional to 312,660.20, 468,990.48 and 219,581.48 is: 329,372.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,660.20 : 468,990.48 = 219,581.48 : x
  2. Step 2: Convert to fraction form
    312,660.20/468,990.48 = 219,581.48/x
  3. Step 3: Cross multiply
    312,660.20x = 468,990.48 × 219,581.48
  4. Step 4: Simplify right side
    312,660.20x = 102,981,622,606.40
  5. Step 5: Solve for x
    x = 102,981,622,606.40/312,660.20
  6. Step 6: Final answer
    x = 329,372.34

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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.