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Finding the Fourth Proportional to 300,652.46, 451,043.31 and 87,424.07

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Solution

The fourth proportional to 300,652.46, 451,043.31 and 87,424.07 is: 131,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,652.46 : 451,043.31 = 87,424.07 : x
  2. Step 2: Convert to fraction form
    300,652.46/451,043.31 = 87,424.07/x
  3. Step 3: Cross multiply
    300,652.46x = 451,043.31 × 87,424.07
  4. Step 4: Simplify right side
    300,652.46x = 39,432,041,906.47
  5. Step 5: Solve for x
    x = 39,432,041,906.47/300,652.46
  6. Step 6: Final answer
    x = 131,154.90

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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.