Home / 259,738.61-389,648.88-109,979.73

Finding the Fourth Proportional to 259,738.61, 389,648.88 and 109,979.73

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Solution

The fourth proportional to 259,738.61, 389,648.88 and 109,979.73 is: 164,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,738.61 : 389,648.88 = 109,979.73 : x
  2. Step 2: Convert to fraction form
    259,738.61/389,648.88 = 109,979.73/x
  3. Step 3: Cross multiply
    259,738.61x = 389,648.88 × 109,979.73
  4. Step 4: Simplify right side
    259,738.61x = 42,853,478,617.20
  5. Step 5: Solve for x
    x = 42,853,478,617.20/259,738.61
  6. Step 6: Final answer
    x = 164,986.94

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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.