Home / 665,188.20-997,928.10-215,832.60

Finding the Fourth Proportional to 665,188.20, 997,928.10 and 215,832.60

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Solution

The fourth proportional to 665,188.20, 997,928.10 and 215,832.60 is: 323,796.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,188.20 : 997,928.10 = 215,832.60 : x
  2. Step 2: Convert to fraction form
    665,188.20/997,928.10 = 215,832.60/x
  3. Step 3: Cross multiply
    665,188.20x = 997,928.10 × 215,832.60
  4. Step 4: Simplify right side
    665,188.20x = 215,385,416,436.06
  5. Step 5: Solve for x
    x = 215,385,416,436.06/665,188.20
  6. Step 6: Final answer
    x = 323,796.21

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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.