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Finding the Fourth Proportional to 412,516.44, 618,685.56 and 146,285.64

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Solution

The fourth proportional to 412,516.44, 618,685.56 and 146,285.64 is: 219,396.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,516.44 : 618,685.56 = 146,285.64 : x
  2. Step 2: Convert to fraction form
    412,516.44/618,685.56 = 146,285.64/x
  3. Step 3: Cross multiply
    412,516.44x = 618,685.56 × 146,285.64
  4. Step 4: Simplify right side
    412,516.44x = 90,504,813,103.36
  5. Step 5: Solve for x
    x = 90,504,813,103.36/412,516.44
  6. Step 6: Final answer
    x = 219,396.86

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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.