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Finding the Fourth Proportional to 295,609.40, 443,414.10 and 279,279.80

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Solution

The fourth proportional to 295,609.40, 443,414.10 and 279,279.80 is: 418,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,609.40 : 443,414.10 = 279,279.80 : x
  2. Step 2: Convert to fraction form
    295,609.40/443,414.10 = 279,279.80/x
  3. Step 3: Cross multiply
    295,609.40x = 443,414.10 × 279,279.80
  4. Step 4: Simplify right side
    295,609.40x = 123,836,601,165.18
  5. Step 5: Solve for x
    x = 123,836,601,165.18/295,609.40
  6. Step 6: Final answer
    x = 418,919.70

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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.