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Finding the Fourth Proportional to 363,391.92, 545,179.01 and 213,757.38

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Solution

The fourth proportional to 363,391.92, 545,179.01 and 213,757.38 is: 320,689.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,391.92 : 545,179.01 = 213,757.38 : x
  2. Step 2: Convert to fraction form
    363,391.92/545,179.01 = 213,757.38/x
  3. Step 3: Cross multiply
    363,391.92x = 545,179.01 × 213,757.38
  4. Step 4: Simplify right side
    363,391.92x = 116,536,035,739.81
  5. Step 5: Solve for x
    x = 116,536,035,739.81/363,391.92
  6. Step 6: Final answer
    x = 320,689.67

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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.