Home / 283,603.06-391,380.60-156,286.90

Finding the Fourth Proportional to 283,603.06, 391,380.60 and 156,286.90

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Solution

The fourth proportional to 283,603.06, 391,380.60 and 156,286.90 is: 215,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,603.06 : 391,380.60 = 156,286.90 : x
  2. Step 2: Convert to fraction form
    283,603.06/391,380.60 = 156,286.90/x
  3. Step 3: Cross multiply
    283,603.06x = 391,380.60 × 156,286.90
  4. Step 4: Simplify right side
    283,603.06x = 61,167,660,694.14
  5. Step 5: Solve for x
    x = 61,167,660,694.14/283,603.06
  6. Step 6: Final answer
    x = 215,680.54

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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.