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Finding the Fourth Proportional to 490,049.65, 676,268.57 and 275,189.86

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Solution

The fourth proportional to 490,049.65, 676,268.57 and 275,189.86 is: 379,762.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,049.65 : 676,268.57 = 275,189.86 : x
  2. Step 2: Convert to fraction form
    490,049.65/676,268.57 = 275,189.86/x
  3. Step 3: Cross multiply
    490,049.65x = 676,268.57 × 275,189.86
  4. Step 4: Simplify right side
    490,049.65x = 186,102,253,100.70
  5. Step 5: Solve for x
    x = 186,102,253,100.70/490,049.65
  6. Step 6: Final answer
    x = 379,762.04

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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.