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Finding the Fourth Proportional to 300,377.50, 450,508.84 and 90,015.44

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Solution

The fourth proportional to 300,377.50, 450,508.84 and 90,015.44 is: 135,005.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,377.50 : 450,508.84 = 90,015.44 : x
  2. Step 2: Convert to fraction form
    300,377.50/450,508.84 = 90,015.44/x
  3. Step 3: Cross multiply
    300,377.50x = 450,508.84 × 90,015.44
  4. Step 4: Simplify right side
    300,377.50x = 40,552,751,449.12
  5. Step 5: Solve for x
    x = 40,552,751,449.12/300,377.50
  6. Step 6: Final answer
    x = 135,005.95

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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.