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Finding the Fourth Proportional to 300,131.83, 450,198.51 and 122,638.84

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Solution

The fourth proportional to 300,131.83, 450,198.51 and 122,638.84 is: 183,958.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,131.83 : 450,198.51 = 122,638.84 : x
  2. Step 2: Convert to fraction form
    300,131.83/450,198.51 = 122,638.84/x
  3. Step 3: Cross multiply
    300,131.83x = 450,198.51 × 122,638.84
  4. Step 4: Simplify right side
    300,131.83x = 55,211,821,450.74
  5. Step 5: Solve for x
    x = 55,211,821,450.74/300,131.83
  6. Step 6: Final answer
    x = 183,958.57

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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.