Home / 412,325.52-618,478.56-131,845.20

Finding the Fourth Proportional to 412,325.52, 618,478.56 and 131,845.20

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Solution

The fourth proportional to 412,325.52, 618,478.56 and 131,845.20 is: 197,764.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,325.52 : 618,478.56 = 131,845.20 : x
  2. Step 2: Convert to fraction form
    412,325.52/618,478.56 = 131,845.20/x
  3. Step 3: Cross multiply
    412,325.52x = 618,478.56 × 131,845.20
  4. Step 4: Simplify right side
    412,325.52x = 81,543,429,438.91
  5. Step 5: Solve for x
    x = 81,543,429,438.91/412,325.52
  6. Step 6: Final answer
    x = 197,764.69

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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.