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Finding the Fourth Proportional to 253,028.72, 379,608.96 and 75,535.82

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Solution

The fourth proportional to 253,028.72, 379,608.96 and 75,535.82 is: 113,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,028.72 : 379,608.96 = 75,535.82 : x
  2. Step 2: Convert to fraction form
    253,028.72/379,608.96 = 75,535.82/x
  3. Step 3: Cross multiply
    253,028.72x = 379,608.96 × 75,535.82
  4. Step 4: Simplify right side
    253,028.72x = 28,674,074,072.95
  5. Step 5: Solve for x
    x = 28,674,074,072.95/253,028.72
  6. Step 6: Final answer
    x = 113,323.40

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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.