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Finding the Fourth Proportional to 300,143.56, 450,215.10 and 120,310.24

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Solution

The fourth proportional to 300,143.56, 450,215.10 and 120,310.24 is: 180,465.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,143.56 : 450,215.10 = 120,310.24 : x
  2. Step 2: Convert to fraction form
    300,143.56/450,215.10 = 120,310.24/x
  3. Step 3: Cross multiply
    300,143.56x = 450,215.10 × 120,310.24
  4. Step 4: Simplify right side
    300,143.56x = 54,165,486,732.62
  5. Step 5: Solve for x
    x = 54,165,486,732.62/300,143.56
  6. Step 6: Final answer
    x = 180,465.26

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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.