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Finding the Fourth Proportional to 253,249.61, 379,894.37 and 84,770.53

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Solution

The fourth proportional to 253,249.61, 379,894.37 and 84,770.53 is: 127,162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,249.61 : 379,894.37 = 84,770.53 : x
  2. Step 2: Convert to fraction form
    253,249.61/379,894.37 = 84,770.53/x
  3. Step 3: Cross multiply
    253,249.61x = 379,894.37 × 84,770.53
  4. Step 4: Simplify right side
    253,249.61x = 32,203,848,329.07
  5. Step 5: Solve for x
    x = 32,203,848,329.07/253,249.61
  6. Step 6: Final answer
    x = 127,162.48

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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.