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Finding the Fourth Proportional to 365,375.65, 503,759.56 and 279,440.05

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Solution

The fourth proportional to 365,375.65, 503,759.56 and 279,440.05 is: 385,276.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,375.65 : 503,759.56 = 279,440.05 : x
  2. Step 2: Convert to fraction form
    365,375.65/503,759.56 = 279,440.05/x
  3. Step 3: Cross multiply
    365,375.65x = 503,759.56 × 279,440.05
  4. Step 4: Simplify right side
    365,375.65x = 140,770,596,634.38
  5. Step 5: Solve for x
    x = 140,770,596,634.38/365,375.65
  6. Step 6: Final answer
    x = 385,276.35

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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.