Home / 283,645.85-391,431.27-156,321.44

Finding the Fourth Proportional to 283,645.85, 391,431.27 and 156,321.44

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Solution

The fourth proportional to 283,645.85, 391,431.27 and 156,321.44 is: 215,723.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,645.85 : 391,431.27 = 156,321.44 : x
  2. Step 2: Convert to fraction form
    283,645.85/391,431.27 = 156,321.44/x
  3. Step 3: Cross multiply
    283,645.85x = 391,431.27 × 156,321.44
  4. Step 4: Simplify right side
    283,645.85x = 61,189,101,866.32
  5. Step 5: Solve for x
    x = 61,189,101,866.32/283,645.85
  6. Step 6: Final answer
    x = 215,723.59

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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.