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Finding the Fourth Proportional to 271,418.80, 407,128.20 and 171,691.60

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Solution

The fourth proportional to 271,418.80, 407,128.20 and 171,691.60 is: 257,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,418.80 : 407,128.20 = 171,691.60 : x
  2. Step 2: Convert to fraction form
    271,418.80/407,128.20 = 171,691.60/x
  3. Step 3: Cross multiply
    271,418.80x = 407,128.20 × 171,691.60
  4. Step 4: Simplify right side
    271,418.80x = 69,900,492,063.12
  5. Step 5: Solve for x
    x = 69,900,492,063.12/271,418.80
  6. Step 6: Final answer
    x = 257,537.40

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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.