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Finding the Fourth Proportional to 300,139.56, 450,209.10 and 120,306.24

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Solution

The fourth proportional to 300,139.56, 450,209.10 and 120,306.24 is: 180,459.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,139.56 : 450,209.10 = 120,306.24 : x
  2. Step 2: Convert to fraction form
    300,139.56/450,209.10 = 120,306.24/x
  3. Step 3: Cross multiply
    300,139.56x = 450,209.10 × 120,306.24
  4. Step 4: Simplify right side
    300,139.56x = 54,162,964,034.78
  5. Step 5: Solve for x
    x = 54,162,964,034.78/300,139.56
  6. Step 6: Final answer
    x = 180,459.26

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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.