Home / 128,398.50-260,685

Finding the Third Proportional to 128,398.50 and 260,685

Calculator

Solution

The third proportional to 128,398.50 and 260,685 is: 529,263.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,398.50 : 260,685 = 260,685 : x
  2. Step 2: Convert to fraction form
    128,398.50/260,685 = 260,685/x
  3. Step 3: Cross multiply
    128,398.50x = 260,685 × 260,685
  4. Step 4: Simplify right side
    128,398.50x = 67,956,669,225
  5. Step 5: Solve for x
    x = 67,956,669,225/128,398.50
  6. Step 6: Final answer
    x = 529,263.73

Related Problems

Find third proportional to 64,199.25 and 130,342.50
Half scale
Find third proportional to 256,797 and 521,370
Double scale
Find third proportional to 128,401 and 260,689
Similar ratio
Find third proportional to 192,597.75 and 391,027.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.