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Finding the Fourth Proportional to 253,105.44, 379,528.74 and 84,564.96

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Solution

The fourth proportional to 253,105.44, 379,528.74 and 84,564.96 is: 126,804.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,105.44 : 379,528.74 = 84,564.96 : x
  2. Step 2: Convert to fraction form
    253,105.44/379,528.74 = 84,564.96/x
  3. Step 3: Cross multiply
    253,105.44x = 379,528.74 × 84,564.96
  4. Step 4: Simplify right side
    253,105.44x = 32,094,832,716.95
  5. Step 5: Solve for x
    x = 32,094,832,716.95/253,105.44
  6. Step 6: Final answer
    x = 126,804.20

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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.