Home / 283,558.40-391,311.60-156,231.20

Finding the Fourth Proportional to 283,558.40, 391,311.60 and 156,231.20

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Solution

The fourth proportional to 283,558.40, 391,311.60 and 156,231.20 is: 215,599.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,558.40 : 391,311.60 = 156,231.20 : x
  2. Step 2: Convert to fraction form
    283,558.40/391,311.60 = 156,231.20/x
  3. Step 3: Cross multiply
    283,558.40x = 391,311.60 × 156,231.20
  4. Step 4: Simplify right side
    283,558.40x = 61,135,080,841.92
  5. Step 5: Solve for x
    x = 61,135,080,841.92/283,558.40
  6. Step 6: Final answer
    x = 215,599.61

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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.