Home / 665,197.20-997,941.60-215,841.60

Finding the Fourth Proportional to 665,197.20, 997,941.60 and 215,841.60

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Solution

The fourth proportional to 665,197.20, 997,941.60 and 215,841.60 is: 323,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,197.20 : 997,941.60 = 215,841.60 : x
  2. Step 2: Convert to fraction form
    665,197.20/997,941.60 = 215,841.60/x
  3. Step 3: Cross multiply
    665,197.20x = 997,941.60 × 215,841.60
  4. Step 4: Simplify right side
    665,197.20x = 215,397,311,650.56
  5. Step 5: Solve for x
    x = 215,397,311,650.56/665,197.20
  6. Step 6: Final answer
    x = 323,809.71

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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.