Home / 280,375.15-386,912.72-159,513.83

Finding the Fourth Proportional to 280,375.15, 386,912.72 and 159,513.83

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Solution

The fourth proportional to 280,375.15, 386,912.72 and 159,513.83 is: 220,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,375.15 : 386,912.72 = 159,513.83 : x
  2. Step 2: Convert to fraction form
    280,375.15/386,912.72 = 159,513.83/x
  3. Step 3: Cross multiply
    280,375.15x = 386,912.72 × 159,513.83
  4. Step 4: Simplify right side
    280,375.15x = 61,717,930,241.70
  5. Step 5: Solve for x
    x = 61,717,930,241.70/280,375.15
  6. Step 6: Final answer
    x = 220,126.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.