Home / 412,040.80-618,003.60-131,586.40

Finding the Fourth Proportional to 412,040.80, 618,003.60 and 131,586.40

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Solution

The fourth proportional to 412,040.80, 618,003.60 and 131,586.40 is: 197,361.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,040.80 : 618,003.60 = 131,586.40 : x
  2. Step 2: Convert to fraction form
    412,040.80/618,003.60 = 131,586.40/x
  3. Step 3: Cross multiply
    412,040.80x = 618,003.60 × 131,586.40
  4. Step 4: Simplify right side
    412,040.80x = 81,320,868,911.04
  5. Step 5: Solve for x
    x = 81,320,868,911.04/412,040.80
  6. Step 6: Final answer
    x = 197,361.21

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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.