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Finding the Fourth Proportional to 363,219.68, 544,986.22 and 138,647.54

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Solution

The fourth proportional to 363,219.68, 544,986.22 and 138,647.54 is: 208,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,219.68 : 544,986.22 = 138,647.54 : x
  2. Step 2: Convert to fraction form
    363,219.68/544,986.22 = 138,647.54/x
  3. Step 3: Cross multiply
    363,219.68x = 544,986.22 × 138,647.54
  4. Step 4: Simplify right side
    363,219.68x = 75,560,998,736.90
  5. Step 5: Solve for x
    x = 75,560,998,736.90/363,219.68
  6. Step 6: Final answer
    x = 208,031.13

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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.