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Finding the Fourth Proportional to 365,389.44, 503,778.60 and 279,453.84

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Solution

The fourth proportional to 365,389.44, 503,778.60 and 279,453.84 is: 385,295.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,389.44 : 503,778.60 = 279,453.84 : x
  2. Step 2: Convert to fraction form
    365,389.44/503,778.60 = 279,453.84/x
  3. Step 3: Cross multiply
    365,389.44x = 503,778.60 × 279,453.84
  4. Step 4: Simplify right side
    365,389.44x = 140,782,864,279.82
  5. Step 5: Solve for x
    x = 140,782,864,279.82/365,389.44
  6. Step 6: Final answer
    x = 385,295.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.