Home / 211,440-289,944

Finding the Third Proportional to 211,440 and 289,944

Calculator

Solution

The third proportional to 211,440 and 289,944 is: 397,595.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,440 : 289,944 = 289,944 : x
  2. Step 2: Convert to fraction form
    211,440/289,944 = 289,944/x
  3. Step 3: Cross multiply
    211,440x = 289,944 × 289,944
  4. Step 4: Simplify right side
    211,440x = 84,067,523,136
  5. Step 5: Solve for x
    x = 84,067,523,136/211,440
  6. Step 6: Final answer
    x = 397,595.17

Related Problems

Find third proportional to 105,720 and 144,972
Half scale
Find third proportional to 422,880 and 579,888
Double scale
Find third proportional to 211,442 and 289,947
Similar ratio
Find third proportional to 317,160 and 434,916
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.