Home / 143,426-311,728

Finding the Third Proportional to 143,426 and 311,728

Calculator

Solution

The third proportional to 143,426 and 311,728 is: 677,522.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,426 : 311,728 = 311,728 : x
  2. Step 2: Convert to fraction form
    143,426/311,728 = 311,728/x
  3. Step 3: Cross multiply
    143,426x = 311,728 × 311,728
  4. Step 4: Simplify right side
    143,426x = 97,174,345,984
  5. Step 5: Solve for x
    x = 97,174,345,984/143,426
  6. Step 6: Final answer
    x = 677,522.53

Related Problems

Find third proportional to 71,713 and 155,864
Half scale
Find third proportional to 286,852 and 623,456
Double scale
Find third proportional to 143,428 and 311,732
Similar ratio
Find third proportional to 215,139 and 467,592
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.