Home / 257,938-289,922

Finding the Third Proportional to 257,938 and 289,922

Calculator

Solution

The third proportional to 257,938 and 289,922 is: 325,871.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,938 : 289,922 = 289,922 : x
  2. Step 2: Convert to fraction form
    257,938/289,922 = 289,922/x
  3. Step 3: Cross multiply
    257,938x = 289,922 × 289,922
  4. Step 4: Simplify right side
    257,938x = 84,054,766,084
  5. Step 5: Solve for x
    x = 84,054,766,084/257,938
  6. Step 6: Final answer
    x = 325,871.98

Related Problems

Find third proportional to 128,969 and 144,961
Half scale
Find third proportional to 515,876 and 579,844
Double scale
Find third proportional to 257,940 and 289,924
Similar ratio
Find third proportional to 386,907 and 434,883
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.