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Finding the Fourth Proportional to 253,884.92, 380,728.89 and 135,491.67

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Solution

The fourth proportional to 253,884.92, 380,728.89 and 135,491.67 is: 203,184.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,884.92 : 380,728.89 = 135,491.67 : x
  2. Step 2: Convert to fraction form
    253,884.92/380,728.89 = 135,491.67/x
  3. Step 3: Cross multiply
    253,884.92x = 380,728.89 × 135,491.67
  4. Step 4: Simplify right side
    253,884.92x = 51,585,593,123.35
  5. Step 5: Solve for x
    x = 51,585,593,123.35/253,884.92
  6. Step 6: Final answer
    x = 203,184.95

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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.