Home / 309,217.26-426,735.24-188,339.22

Finding the Fourth Proportional to 309,217.26, 426,735.24 and 188,339.22

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Solution

The fourth proportional to 309,217.26, 426,735.24 and 188,339.22 is: 259,917.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,217.26 : 426,735.24 = 188,339.22 : x
  2. Step 2: Convert to fraction form
    309,217.26/426,735.24 = 188,339.22/x
  3. Step 3: Cross multiply
    309,217.26x = 426,735.24 × 188,339.22
  4. Step 4: Simplify right side
    309,217.26x = 80,370,982,248.11
  5. Step 5: Solve for x
    x = 80,370,982,248.11/309,217.26
  6. Step 6: Final answer
    x = 259,917.52

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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.