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Finding the Fourth Proportional to 300,423.72, 450,473.94 and 120,418.80

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Solution

The fourth proportional to 300,423.72, 450,473.94 and 120,418.80 is: 180,563.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,423.72 : 450,473.94 = 120,418.80 : x
  2. Step 2: Convert to fraction form
    300,423.72/450,473.94 = 120,418.80/x
  3. Step 3: Cross multiply
    300,423.72x = 450,473.94 × 120,418.80
  4. Step 4: Simplify right side
    300,423.72x = 54,245,531,286.07
  5. Step 5: Solve for x
    x = 54,245,531,286.07/300,423.72
  6. Step 6: Final answer
    x = 180,563.41

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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.