Home / 206,439.20-309,667.80-56,675.60

Finding the Fourth Proportional to 206,439.20, 309,667.80 and 56,675.60

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Solution

The fourth proportional to 206,439.20, 309,667.80 and 56,675.60 is: 85,015.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,439.20 : 309,667.80 = 56,675.60 : x
  2. Step 2: Convert to fraction form
    206,439.20/309,667.80 = 56,675.60/x
  3. Step 3: Cross multiply
    206,439.20x = 309,667.80 × 56,675.60
  4. Step 4: Simplify right side
    206,439.20x = 17,550,608,365.68
  5. Step 5: Solve for x
    x = 17,550,608,365.68/206,439.20
  6. Step 6: Final answer
    x = 85,015.87

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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.