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Finding the Fourth Proportional to 271,215.80, 406,938.90 and 130,902.20

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Solution

The fourth proportional to 271,215.80, 406,938.90 and 130,902.20 is: 196,408.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,215.80 : 406,938.90 = 130,902.20 : x
  2. Step 2: Convert to fraction form
    271,215.80/406,938.90 = 130,902.20/x
  3. Step 3: Cross multiply
    271,215.80x = 406,938.90 × 130,902.20
  4. Step 4: Simplify right side
    271,215.80x = 53,269,197,275.58
  5. Step 5: Solve for x
    x = 53,269,197,275.58/271,215.80
  6. Step 6: Final answer
    x = 196,408.90

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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.