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Finding the Fourth Proportional to 490,173.37, 676,502.66 and 275,313.42

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Solution

The fourth proportional to 490,173.37, 676,502.66 and 275,313.42 is: 379,968.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,173.37 : 676,502.66 = 275,313.42 : x
  2. Step 2: Convert to fraction form
    490,173.37/676,502.66 = 275,313.42/x
  3. Step 3: Cross multiply
    490,173.37x = 676,502.66 × 275,313.42
  4. Step 4: Simplify right side
    490,173.37x = 186,250,261,651.98
  5. Step 5: Solve for x
    x = 186,250,261,651.98/490,173.37
  6. Step 6: Final answer
    x = 379,968.14

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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.