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Finding the Fourth Proportional to 327,999.40, 490,832.70 and 300,005.80

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Solution

The fourth proportional to 327,999.40, 490,832.70 and 300,005.80 is: 448,941.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,999.40 : 490,832.70 = 300,005.80 : x
  2. Step 2: Convert to fraction form
    327,999.40/490,832.70 = 300,005.80/x
  3. Step 3: Cross multiply
    327,999.40x = 490,832.70 × 300,005.80
  4. Step 4: Simplify right side
    327,999.40x = 147,252,656,829.66
  5. Step 5: Solve for x
    x = 147,252,656,829.66/327,999.40
  6. Step 6: Final answer
    x = 448,941.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.