Home / 242,936-388,120

Finding the Third Proportional to 242,936 and 388,120

Calculator

Solution

The third proportional to 242,936 and 388,120 is: 620,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,936 : 388,120 = 388,120 : x
  2. Step 2: Convert to fraction form
    242,936/388,120 = 388,120/x
  3. Step 3: Cross multiply
    242,936x = 388,120 × 388,120
  4. Step 4: Simplify right side
    242,936x = 150,637,134,400
  5. Step 5: Solve for x
    x = 150,637,134,400/242,936
  6. Step 6: Final answer
    x = 620,069.21

Related Problems

Find third proportional to 121,468 and 194,060
Half scale
Find third proportional to 485,872 and 776,240
Double scale
Find third proportional to 242,938 and 388,123
Similar ratio
Find third proportional to 364,404 and 582,180
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.