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Finding the Fourth Proportional to 485,474.46, 669,680.42 and 303,871.12

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Solution

The fourth proportional to 485,474.46, 669,680.42 and 303,871.12 is: 419,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,474.46 : 669,680.42 = 303,871.12 : x
  2. Step 2: Convert to fraction form
    485,474.46/669,680.42 = 303,871.12/x
  3. Step 3: Cross multiply
    485,474.46x = 669,680.42 × 303,871.12
  4. Step 4: Simplify right side
    485,474.46x = 203,496,539,267.47
  5. Step 5: Solve for x
    x = 203,496,539,267.47/485,474.46
  6. Step 6: Final answer
    x = 419,170.43

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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.