Home / 221,297.87-331,386.26-137,222.25

Finding the Fourth Proportional to 221,297.87, 331,386.26 and 137,222.25

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Solution

The fourth proportional to 221,297.87, 331,386.26 and 137,222.25 is: 205,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,297.87 : 331,386.26 = 137,222.25 : x
  2. Step 2: Convert to fraction form
    221,297.87/331,386.26 = 137,222.25/x
  3. Step 3: Cross multiply
    221,297.87x = 331,386.26 × 137,222.25
  4. Step 4: Simplify right side
    221,297.87x = 45,473,568,216.29
  5. Step 5: Solve for x
    x = 45,473,568,216.29/221,297.87
  6. Step 6: Final answer
    x = 205,485.79

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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.