Home / 280,286.86-387,016.25-225,665.52

Finding the Fourth Proportional to 280,286.86, 387,016.25 and 225,665.52

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Solution

The fourth proportional to 280,286.86, 387,016.25 and 225,665.52 is: 311,595.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,286.86 : 387,016.25 = 225,665.52 : x
  2. Step 2: Convert to fraction form
    280,286.86/387,016.25 = 225,665.52/x
  3. Step 3: Cross multiply
    280,286.86x = 387,016.25 × 225,665.52
  4. Step 4: Simplify right side
    280,286.86x = 87,336,223,868.86
  5. Step 5: Solve for x
    x = 87,336,223,868.86/280,286.86
  6. Step 6: Final answer
    x = 311,595.86

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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.