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Finding the Fourth Proportional to 253,143.90, 379,645.56 and 75,608.82

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Solution

The fourth proportional to 253,143.90, 379,645.56 and 75,608.82 is: 113,392.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,143.90 : 379,645.56 = 75,608.82 : x
  2. Step 2: Convert to fraction form
    253,143.90/379,645.56 = 75,608.82/x
  3. Step 3: Cross multiply
    253,143.90x = 379,645.56 × 75,608.82
  4. Step 4: Simplify right side
    253,143.90x = 28,704,552,809.84
  5. Step 5: Solve for x
    x = 28,704,552,809.84/253,143.90
  6. Step 6: Final answer
    x = 113,392.24

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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.