Home / 258,761-356,320

Finding the Third Proportional to 258,761 and 356,320

Calculator

Solution

The third proportional to 258,761 and 356,320 is: 490,661.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,761 : 356,320 = 356,320 : x
  2. Step 2: Convert to fraction form
    258,761/356,320 = 356,320/x
  3. Step 3: Cross multiply
    258,761x = 356,320 × 356,320
  4. Step 4: Simplify right side
    258,761x = 126,963,942,400
  5. Step 5: Solve for x
    x = 126,963,942,400/258,761
  6. Step 6: Final answer
    x = 490,661.04

Related Problems

Find third proportional to 129,380.50 and 178,160
Half scale
Find third proportional to 517,522 and 712,640
Double scale
Find third proportional to 258,763 and 356,323
Similar ratio
Find third proportional to 388,141.50 and 534,480
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.