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Finding the Fourth Proportional to 300,015.10, 450,074.49 and 122,618.62

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Solution

The fourth proportional to 300,015.10, 450,074.49 and 122,618.62 is: 183,949.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,015.10 : 450,074.49 = 122,618.62 : x
  2. Step 2: Convert to fraction form
    300,015.10/450,074.49 = 122,618.62/x
  3. Step 3: Cross multiply
    300,015.10x = 450,074.49 × 122,618.62
  4. Step 4: Simplify right side
    300,015.10x = 55,187,512,861.00
  5. Step 5: Solve for x
    x = 55,187,512,861.00/300,015.10
  6. Step 6: Final answer
    x = 183,949.12

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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.