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Finding the Fourth Proportional to 665,311.80, 997,967.70 and 192,012.60

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Solution

The fourth proportional to 665,311.80, 997,967.70 and 192,012.60 is: 288,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,311.80 : 997,967.70 = 192,012.60 : x
  2. Step 2: Convert to fraction form
    665,311.80/997,967.70 = 192,012.60/x
  3. Step 3: Cross multiply
    665,311.80x = 997,967.70 × 192,012.60
  4. Step 4: Simplify right side
    665,311.80x = 191,622,372,793.02
  5. Step 5: Solve for x
    x = 191,622,372,793.02/665,311.80
  6. Step 6: Final answer
    x = 288,018.90

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Similar ratio
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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.