Home / 309,619.45-426,879.33-200,531.05

Finding the Fourth Proportional to 309,619.45, 426,879.33 and 200,531.05

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Solution

The fourth proportional to 309,619.45, 426,879.33 and 200,531.05 is: 276,476.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,619.45 : 426,879.33 = 200,531.05 : x
  2. Step 2: Convert to fraction form
    309,619.45/426,879.33 = 200,531.05/x
  3. Step 3: Cross multiply
    309,619.45x = 426,879.33 × 200,531.05
  4. Step 4: Simplify right side
    309,619.45x = 85,602,560,268.20
  5. Step 5: Solve for x
    x = 85,602,560,268.20/309,619.45
  6. Step 6: Final answer
    x = 276,476.69

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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.