Home / 280,759.72-421,431.26-162,661.80

Finding the Fourth Proportional to 280,759.72, 421,431.26 and 162,661.80

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Solution

The fourth proportional to 280,759.72, 421,431.26 and 162,661.80 is: 244,161.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,759.72 : 421,431.26 = 162,661.80 : x
  2. Step 2: Convert to fraction form
    280,759.72/421,431.26 = 162,661.80/x
  3. Step 3: Cross multiply
    280,759.72x = 421,431.26 × 162,661.80
  4. Step 4: Simplify right side
    280,759.72x = 68,550,767,327.87
  5. Step 5: Solve for x
    x = 68,550,767,327.87/280,759.72
  6. Step 6: Final answer
    x = 244,161.69

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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.