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Finding the Fourth Proportional to 330,449.63, 456,020.48 and 196,313.63

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Solution

The fourth proportional to 330,449.63, 456,020.48 and 196,313.63 is: 270,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,449.63 : 456,020.48 = 196,313.63 : x
  2. Step 2: Convert to fraction form
    330,449.63/456,020.48 = 196,313.63/x
  3. Step 3: Cross multiply
    330,449.63x = 456,020.48 × 196,313.63
  4. Step 4: Simplify right side
    330,449.63x = 89,523,033,993.82
  5. Step 5: Solve for x
    x = 89,523,033,993.82/330,449.63
  6. Step 6: Final answer
    x = 270,912.80

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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.