Home / 412,195.20-618,334.56-142,288.16

Finding the Fourth Proportional to 412,195.20, 618,334.56 and 142,288.16

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Solution

The fourth proportional to 412,195.20, 618,334.56 and 142,288.16 is: 213,446.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,195.20 : 618,334.56 = 142,288.16 : x
  2. Step 2: Convert to fraction form
    412,195.20/618,334.56 = 142,288.16/x
  3. Step 3: Cross multiply
    412,195.20x = 618,334.56 × 142,288.16
  4. Step 4: Simplify right side
    412,195.20x = 87,981,686,806.81
  5. Step 5: Solve for x
    x = 87,981,686,806.81/412,195.20
  6. Step 6: Final answer
    x = 213,446.66

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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.