Home / 283,432.12-391,163.92-211,687.56

Finding the Fourth Proportional to 283,432.12, 391,163.92 and 211,687.56

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Solution

The fourth proportional to 283,432.12, 391,163.92 and 211,687.56 is: 292,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,432.12 : 391,163.92 = 211,687.56 : x
  2. Step 2: Convert to fraction form
    283,432.12/391,163.92 = 211,687.56/x
  3. Step 3: Cross multiply
    283,432.12x = 391,163.92 × 211,687.56
  4. Step 4: Simplify right side
    283,432.12x = 82,804,535,784.84
  5. Step 5: Solve for x
    x = 82,804,535,784.84/283,432.12
  6. Step 6: Final answer
    x = 292,149.44

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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.