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Finding the Fourth Proportional to 660,132.80, 990,199.20 and 161,496.80

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Solution

The fourth proportional to 660,132.80, 990,199.20 and 161,496.80 is: 242,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,132.80 : 990,199.20 = 161,496.80 : x
  2. Step 2: Convert to fraction form
    660,132.80/990,199.20 = 161,496.80/x
  3. Step 3: Cross multiply
    660,132.80x = 990,199.20 × 161,496.80
  4. Step 4: Simplify right side
    660,132.80x = 159,914,002,162.56
  5. Step 5: Solve for x
    x = 159,914,002,162.56/660,132.80
  6. Step 6: Final answer
    x = 242,245.20

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Similar ratio
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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.