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Finding the Fourth Proportional to 660,546.60, 990,819.90 and 161,910.60

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Solution

The fourth proportional to 660,546.60, 990,819.90 and 161,910.60 is: 242,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,546.60 : 990,819.90 = 161,910.60 : x
  2. Step 2: Convert to fraction form
    660,546.60/990,819.90 = 161,910.60/x
  3. Step 3: Cross multiply
    660,546.60x = 990,819.90 × 161,910.60
  4. Step 4: Simplify right side
    660,546.60x = 160,424,244,500.94
  5. Step 5: Solve for x
    x = 160,424,244,500.94/660,546.60
  6. Step 6: Final answer
    x = 242,865.90

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1.5x scale

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.