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Finding the Fourth Proportional to 331,519.80, 497,279.70 and 205,548.60

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Solution

The fourth proportional to 331,519.80, 497,279.70 and 205,548.60 is: 308,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,519.80 : 497,279.70 = 205,548.60 : x
  2. Step 2: Convert to fraction form
    331,519.80/497,279.70 = 205,548.60/x
  3. Step 3: Cross multiply
    331,519.80x = 497,279.70 × 205,548.60
  4. Step 4: Simplify right side
    331,519.80x = 102,215,146,143.42
  5. Step 5: Solve for x
    x = 102,215,146,143.42/331,519.80
  6. Step 6: Final answer
    x = 308,322.90

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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.