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Finding the Fourth Proportional to 271,019.22, 406,311.75 and 128,793.12

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Solution

The fourth proportional to 271,019.22, 406,311.75 and 128,793.12 is: 193,086.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,019.22 : 406,311.75 = 128,793.12 : x
  2. Step 2: Convert to fraction form
    271,019.22/406,311.75 = 128,793.12/x
  3. Step 3: Cross multiply
    271,019.22x = 406,311.75 × 128,793.12
  4. Step 4: Simplify right side
    271,019.22x = 52,330,157,975.16
  5. Step 5: Solve for x
    x = 52,330,157,975.16/271,019.22
  6. Step 6: Final answer
    x = 193,086.52

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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.