Home / 280,212.66-386,241.74-189,535.55

Finding the Fourth Proportional to 280,212.66, 386,241.74 and 189,535.55

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Solution

The fourth proportional to 280,212.66, 386,241.74 and 189,535.55 is: 261,253.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,212.66 : 386,241.74 = 189,535.55 : x
  2. Step 2: Convert to fraction form
    280,212.66/386,241.74 = 189,535.55/x
  3. Step 3: Cross multiply
    280,212.66x = 386,241.74 × 189,535.55
  4. Step 4: Simplify right side
    280,212.66x = 73,206,540,623.86
  5. Step 5: Solve for x
    x = 73,206,540,623.86/280,212.66
  6. Step 6: Final answer
    x = 261,253.51

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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.