Home / 259,074.39-388,625.46-81,595.23

Finding the Fourth Proportional to 259,074.39, 388,625.46 and 81,595.23

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Solution

The fourth proportional to 259,074.39, 388,625.46 and 81,595.23 is: 122,397.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,074.39 : 388,625.46 = 81,595.23 : x
  2. Step 2: Convert to fraction form
    259,074.39/388,625.46 = 81,595.23/x
  3. Step 3: Cross multiply
    259,074.39x = 388,625.46 × 81,595.23
  4. Step 4: Simplify right side
    259,074.39x = 31,709,983,792.56
  5. Step 5: Solve for x
    x = 31,709,983,792.56/259,074.39
  6. Step 6: Final answer
    x = 122,397.21

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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.