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Finding the Fourth Proportional to 271,231.20, 406,911.60 and 130,874.40

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Solution

The fourth proportional to 271,231.20, 406,911.60 and 130,874.40 is: 196,342.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,231.20 : 406,911.60 = 130,874.40 : x
  2. Step 2: Convert to fraction form
    271,231.20/406,911.60 = 130,874.40/x
  3. Step 3: Cross multiply
    271,231.20x = 406,911.60 × 130,874.40
  4. Step 4: Simplify right side
    271,231.20x = 53,254,311,503.04
  5. Step 5: Solve for x
    x = 53,254,311,503.04/271,231.20
  6. Step 6: Final answer
    x = 196,342.87

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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.