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Finding the Fourth Proportional to 199,187.40, 298,773.90 and 80,855.40

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Solution

The fourth proportional to 199,187.40, 298,773.90 and 80,855.40 is: 121,280.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,187.40 : 298,773.90 = 80,855.40 : x
  2. Step 2: Convert to fraction form
    199,187.40/298,773.90 = 80,855.40/x
  3. Step 3: Cross multiply
    199,187.40x = 298,773.90 × 80,855.40
  4. Step 4: Simplify right side
    199,187.40x = 24,157,483,194.06
  5. Step 5: Solve for x
    x = 24,157,483,194.06/199,187.40
  6. Step 6: Final answer
    x = 121,280.18

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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.