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Finding the Fourth Proportional to 300,991.46, 451,562.35 and 212,417.96

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Solution

The fourth proportional to 300,991.46, 451,562.35 and 212,417.96 is: 318,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,991.46 : 451,562.35 = 212,417.96 : x
  2. Step 2: Convert to fraction form
    300,991.46/451,562.35 = 212,417.96/x
  3. Step 3: Cross multiply
    300,991.46x = 451,562.35 × 212,417.96
  4. Step 4: Simplify right side
    300,991.46x = 95,919,949,879.90
  5. Step 5: Solve for x
    x = 95,919,949,879.90/300,991.46
  6. Step 6: Final answer
    x = 318,679.98

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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.