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Finding the Fourth Proportional to 221,201.67, 331,802.40 and 54,989.67

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Solution

The fourth proportional to 221,201.67, 331,802.40 and 54,989.67 is: 82,484.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,201.67 : 331,802.40 = 54,989.67 : x
  2. Step 2: Convert to fraction form
    221,201.67/331,802.40 = 54,989.67/x
  3. Step 3: Cross multiply
    221,201.67x = 331,802.40 × 54,989.67
  4. Step 4: Simplify right side
    221,201.67x = 18,245,704,481.21
  5. Step 5: Solve for x
    x = 18,245,704,481.21/221,201.67
  6. Step 6: Final answer
    x = 82,484.48

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1.5x scale

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.