Home / 129,000-303,540

Finding the Third Proportional to 129,000 and 303,540

Calculator

Solution

The third proportional to 129,000 and 303,540 is: 714,236.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,000 : 303,540 = 303,540 : x
  2. Step 2: Convert to fraction form
    129,000/303,540 = 303,540/x
  3. Step 3: Cross multiply
    129,000x = 303,540 × 303,540
  4. Step 4: Simplify right side
    129,000x = 92,136,531,600
  5. Step 5: Solve for x
    x = 92,136,531,600/129,000
  6. Step 6: Final answer
    x = 714,236.68

Related Problems

Find third proportional to 64,500 and 151,770
Half scale
Find third proportional to 258,000 and 607,080
Double scale
Find third proportional to 129,002 and 303,545
Similar ratio
Find third proportional to 193,500 and 455,310
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.