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Finding the Fourth Proportional to 253,171.20, 379,449.60 and 112,780.80

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Solution

The fourth proportional to 253,171.20, 379,449.60 and 112,780.80 is: 169,034.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,171.20 : 379,449.60 = 112,780.80 : x
  2. Step 2: Convert to fraction form
    253,171.20/379,449.60 = 112,780.80/x
  3. Step 3: Cross multiply
    253,171.20x = 379,449.60 × 112,780.80
  4. Step 4: Simplify right side
    253,171.20x = 42,794,629,447.68
  5. Step 5: Solve for x
    x = 42,794,629,447.68/253,171.20
  6. Step 6: Final answer
    x = 169,034.35

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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.