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Finding the Fourth Proportional to 271,319.80, 406,979.70 and 231,230.20

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Solution

The fourth proportional to 271,319.80, 406,979.70 and 231,230.20 is: 346,845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,319.80 : 406,979.70 = 231,230.20 : x
  2. Step 2: Convert to fraction form
    271,319.80/406,979.70 = 231,230.20/x
  3. Step 3: Cross multiply
    271,319.80x = 406,979.70 × 231,230.20
  4. Step 4: Simplify right side
    271,319.80x = 94,105,997,426.94
  5. Step 5: Solve for x
    x = 94,105,997,426.94/271,319.80
  6. Step 6: Final answer
    x = 346,845.30

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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.