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Finding the Fourth Proportional to 382,279.44, 529,997.61 and 361,021.80

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Solution

The fourth proportional to 382,279.44, 529,997.61 and 361,021.80 is: 500,525.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,279.44 : 529,997.61 = 361,021.80 : x
  2. Step 2: Convert to fraction form
    382,279.44/529,997.61 = 361,021.80/x
  3. Step 3: Cross multiply
    382,279.44x = 529,997.61 × 361,021.80
  4. Step 4: Simplify right side
    382,279.44x = 191,340,691,157.90
  5. Step 5: Solve for x
    x = 191,340,691,157.90/382,279.44
  6. Step 6: Final answer
    x = 500,525.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.