Home / 130,720-286,360

Finding the Third Proportional to 130,720 and 286,360

Calculator

Solution

The third proportional to 130,720 and 286,360 is: 627,310.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,720 : 286,360 = 286,360 : x
  2. Step 2: Convert to fraction form
    130,720/286,360 = 286,360/x
  3. Step 3: Cross multiply
    130,720x = 286,360 × 286,360
  4. Step 4: Simplify right side
    130,720x = 82,002,049,600
  5. Step 5: Solve for x
    x = 82,002,049,600/130,720
  6. Step 6: Final answer
    x = 627,310.66

Related Problems

Find third proportional to 65,360 and 143,180
Half scale
Find third proportional to 261,440 and 572,720
Double scale
Find third proportional to 130,722 and 286,364
Similar ratio
Find third proportional to 196,080 and 429,540
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.