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Finding the Fourth Proportional to 300,074.92, 450,349 and 131,711.46

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Solution

The fourth proportional to 300,074.92, 450,349 and 131,711.46 is: 197,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,074.92 : 450,349 = 131,711.46 : x
  2. Step 2: Convert to fraction form
    300,074.92/450,349 = 131,711.46/x
  3. Step 3: Cross multiply
    300,074.92x = 450,349 × 131,711.46
  4. Step 4: Simplify right side
    300,074.92x = 59,316,124,299.54
  5. Step 5: Solve for x
    x = 59,316,124,299.54/300,074.92
  6. Step 6: Final answer
    x = 197,671.05

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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.