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Finding the Fourth Proportional to 300,511.76, 450,840.53 and 90,149.69

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Solution

The fourth proportional to 300,511.76, 450,840.53 and 90,149.69 is: 135,246.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,511.76 : 450,840.53 = 90,149.69 : x
  2. Step 2: Convert to fraction form
    300,511.76/450,840.53 = 90,149.69/x
  3. Step 3: Cross multiply
    300,511.76x = 450,840.53 × 90,149.69
  4. Step 4: Simplify right side
    300,511.76x = 40,643,135,371.41
  5. Step 5: Solve for x
    x = 40,643,135,371.41/300,511.76
  6. Step 6: Final answer
    x = 135,246.41

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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.