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Finding the Fourth Proportional to 420,067.44, 630,194.06 and 120,548.88

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Solution

The fourth proportional to 420,067.44, 630,194.06 and 120,548.88 is: 180,849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,067.44 : 630,194.06 = 120,548.88 : x
  2. Step 2: Convert to fraction form
    420,067.44/630,194.06 = 120,548.88/x
  3. Step 3: Cross multiply
    420,067.44x = 630,194.06 × 120,548.88
  4. Step 4: Simplify right side
    420,067.44x = 75,969,188,115.65
  5. Step 5: Solve for x
    x = 75,969,188,115.65/420,067.44
  6. Step 6: Final answer
    x = 180,849.98

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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.