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Finding the Fourth Proportional to 199,659,998.40, 299,489,997.60 and 56,052,830.40

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Solution

The fourth proportional to 199,659,998.40, 299,489,997.60 and 56,052,830.40 is: 84,079,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,659,998.40 : 299,489,997.60 = 56,052,830.40 : x
  2. Step 2: Convert to fraction form
    199,659,998.40/299,489,997.60 = 56,052,830.40/x
  3. Step 3: Cross multiply
    199,659,998.40x = 299,489,997.60 × 56,052,830.40
  4. Step 4: Simplify right side
    199,659,998.40x = 16,787,262,041,969,208
  5. Step 5: Solve for x
    x = 16,787,262,041,969,208/199,659,998.40
  6. Step 6: Final answer
    x = 84,079,245.60

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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.