Home / 257,845.56-386,767.18-80,352.72

Finding the Fourth Proportional to 257,845.56, 386,767.18 and 80,352.72

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Solution

The fourth proportional to 257,845.56, 386,767.18 and 80,352.72 is: 120,528.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,845.56 : 386,767.18 = 80,352.72 : x
  2. Step 2: Convert to fraction form
    257,845.56/386,767.18 = 80,352.72/x
  3. Step 3: Cross multiply
    257,845.56x = 386,767.18 × 80,352.72
  4. Step 4: Simplify right side
    257,845.56x = 31,077,794,919.73
  5. Step 5: Solve for x
    x = 31,077,794,919.73/257,845.56
  6. Step 6: Final answer
    x = 120,528.72

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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.