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Finding the Fourth Proportional to 356,418.50, 491,871.08 and 203,481.59

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Solution

The fourth proportional to 356,418.50, 491,871.08 and 203,481.59 is: 280,812.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,418.50 : 491,871.08 = 203,481.59 : x
  2. Step 2: Convert to fraction form
    356,418.50/491,871.08 = 203,481.59/x
  3. Step 3: Cross multiply
    356,418.50x = 491,871.08 × 203,481.59
  4. Step 4: Simplify right side
    356,418.50x = 100,086,707,482.77
  5. Step 5: Solve for x
    x = 100,086,707,482.77/356,418.50
  6. Step 6: Final answer
    x = 280,812.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.