Home / 309,049.12-426,473.04-189,794.08

Finding the Fourth Proportional to 309,049.12, 426,473.04 and 189,794.08

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Solution

The fourth proportional to 309,049.12, 426,473.04 and 189,794.08 is: 261,906.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,049.12 : 426,473.04 = 189,794.08 : x
  2. Step 2: Convert to fraction form
    309,049.12/426,473.04 = 189,794.08/x
  3. Step 3: Cross multiply
    309,049.12x = 426,473.04 × 189,794.08
  4. Step 4: Simplify right side
    309,049.12x = 80,942,058,271.60
  5. Step 5: Solve for x
    x = 80,942,058,271.60/309,049.12
  6. Step 6: Final answer
    x = 261,906.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.