Home / 149,910-319,240

Finding the Third Proportional to 149,910 and 319,240

Calculator

Solution

The third proportional to 149,910 and 319,240 is: 679,835.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,910 : 319,240 = 319,240 : x
  2. Step 2: Convert to fraction form
    149,910/319,240 = 319,240/x
  3. Step 3: Cross multiply
    149,910x = 319,240 × 319,240
  4. Step 4: Simplify right side
    149,910x = 101,914,177,600
  5. Step 5: Solve for x
    x = 101,914,177,600/149,910
  6. Step 6: Final answer
    x = 679,835.75

Related Problems

Find third proportional to 74,955 and 159,620
Half scale
Find third proportional to 299,820 and 638,480
Double scale
Find third proportional to 149,912 and 319,244
Similar ratio
Find third proportional to 224,865 and 478,860
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.