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Finding the Fourth Proportional to 260,028.30, 389,750.85 and 133,619.70

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Solution

The fourth proportional to 260,028.30, 389,750.85 and 133,619.70 is: 200,279.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,028.30 : 389,750.85 = 133,619.70 : x
  2. Step 2: Convert to fraction form
    260,028.30/389,750.85 = 133,619.70/x
  3. Step 3: Cross multiply
    260,028.30x = 389,750.85 × 133,619.70
  4. Step 4: Simplify right side
    260,028.30x = 52,078,391,651.75
  5. Step 5: Solve for x
    x = 52,078,391,651.75/260,028.30
  6. Step 6: Final answer
    x = 200,279.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.