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Finding the Fourth Proportional to 253,087.68, 380,321.28 and 134,843.52

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Solution

The fourth proportional to 253,087.68, 380,321.28 and 134,843.52 is: 202,632.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,087.68 : 380,321.28 = 134,843.52 : x
  2. Step 2: Convert to fraction form
    253,087.68/380,321.28 = 134,843.52/x
  3. Step 3: Cross multiply
    253,087.68x = 380,321.28 × 134,843.52
  4. Step 4: Simplify right side
    253,087.68x = 51,283,860,126.11
  5. Step 5: Solve for x
    x = 51,283,860,126.11/253,087.68
  6. Step 6: Final answer
    x = 202,632.78

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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.