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Finding the Fourth Proportional to 352,644.63, 486,679.74 and 199,709.85

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Solution

The fourth proportional to 352,644.63, 486,679.74 and 199,709.85 is: 275,616.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,644.63 : 486,679.74 = 199,709.85 : x
  2. Step 2: Convert to fraction form
    352,644.63/486,679.74 = 199,709.85/x
  3. Step 3: Cross multiply
    352,644.63x = 486,679.74 × 199,709.85
  4. Step 4: Simplify right side
    352,644.63x = 97,194,737,873.44
  5. Step 5: Solve for x
    x = 97,194,737,873.44/352,644.63
  6. Step 6: Final answer
    x = 275,616.67

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Why These Related Problems?

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