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Finding the Fourth Proportional to 203,483.74, 305,269.35 and 68,561.22

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Solution

The fourth proportional to 203,483.74, 305,269.35 and 68,561.22 is: 102,856.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,483.74 : 305,269.35 = 68,561.22 : x
  2. Step 2: Convert to fraction form
    203,483.74/305,269.35 = 68,561.22/x
  3. Step 3: Cross multiply
    203,483.74x = 305,269.35 × 68,561.22
  4. Step 4: Simplify right side
    203,483.74x = 20,929,639,064.61
  5. Step 5: Solve for x
    x = 20,929,639,064.61/203,483.74
  6. Step 6: Final answer
    x = 102,856.57

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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.