Home / 135,780-298,306

Finding the Third Proportional to 135,780 and 298,306

Calculator

Solution

The third proportional to 135,780 and 298,306 is: 655,372.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,780 : 298,306 = 298,306 : x
  2. Step 2: Convert to fraction form
    135,780/298,306 = 298,306/x
  3. Step 3: Cross multiply
    135,780x = 298,306 × 298,306
  4. Step 4: Simplify right side
    135,780x = 88,986,469,636
  5. Step 5: Solve for x
    x = 88,986,469,636/135,780
  6. Step 6: Final answer
    x = 655,372.44

Related Problems

Find third proportional to 67,890 and 149,153
Half scale
Find third proportional to 271,560 and 596,612
Double scale
Find third proportional to 135,782 and 298,310
Similar ratio
Find third proportional to 203,670 and 447,459
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.