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Finding the Fourth Proportional to 221,998.46, 306,153.44 and 145,489.67

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Solution

The fourth proportional to 221,998.46, 306,153.44 and 145,489.67 is: 200,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,998.46 : 306,153.44 = 145,489.67 : x
  2. Step 2: Convert to fraction form
    221,998.46/306,153.44 = 145,489.67/x
  3. Step 3: Cross multiply
    221,998.46x = 306,153.44 × 145,489.67
  4. Step 4: Simplify right side
    221,998.46x = 44,542,164,112.52
  5. Step 5: Solve for x
    x = 44,542,164,112.52/221,998.46
  6. Step 6: Final answer
    x = 200,641.78

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