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Finding the Fourth Proportional to 331,483.80, 496,640.10 and 320,520.60

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Solution

The fourth proportional to 331,483.80, 496,640.10 and 320,520.60 is: 480,214.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,483.80 : 496,640.10 = 320,520.60 : x
  2. Step 2: Convert to fraction form
    331,483.80/496,640.10 = 320,520.60/x
  3. Step 3: Cross multiply
    331,483.80x = 496,640.10 × 320,520.60
  4. Step 4: Simplify right side
    331,483.80x = 159,183,382,836.06
  5. Step 5: Solve for x
    x = 159,183,382,836.06/331,483.80
  6. Step 6: Final answer
    x = 480,214.67

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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.