Home / 280,230.21-386,265.83-189,553.05

Finding the Fourth Proportional to 280,230.21, 386,265.83 and 189,553.05

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Solution

The fourth proportional to 280,230.21, 386,265.83 and 189,553.05 is: 261,277.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,230.21 : 386,265.83 = 189,553.05 : x
  2. Step 2: Convert to fraction form
    280,230.21/386,265.83 = 189,553.05/x
  3. Step 3: Cross multiply
    280,230.21x = 386,265.83 × 189,553.05
  4. Step 4: Simplify right side
    280,230.21x = 73,217,865,239.52
  5. Step 5: Solve for x
    x = 73,217,865,239.52/280,230.21
  6. Step 6: Final answer
    x = 261,277.56

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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.