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Finding the Fourth Proportional to 253,974.97, 381,172.65 and 127,651.42

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Solution

The fourth proportional to 253,974.97, 381,172.65 and 127,651.42 is: 191,582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,974.97 : 381,172.65 = 127,651.42 : x
  2. Step 2: Convert to fraction form
    253,974.97/381,172.65 = 127,651.42/x
  3. Step 3: Cross multiply
    253,974.97x = 381,172.65 × 127,651.42
  4. Step 4: Simplify right side
    253,974.97x = 48,657,230,037.66
  5. Step 5: Solve for x
    x = 48,657,230,037.66/253,974.97
  6. Step 6: Final answer
    x = 191,582.78

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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.