Home / 120,489-264,620

Finding the Third Proportional to 120,489 and 264,620

Calculator

Solution

The third proportional to 120,489 and 264,620 is: 581,162.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,489 : 264,620 = 264,620 : x
  2. Step 2: Convert to fraction form
    120,489/264,620 = 264,620/x
  3. Step 3: Cross multiply
    120,489x = 264,620 × 264,620
  4. Step 4: Simplify right side
    120,489x = 70,023,744,400
  5. Step 5: Solve for x
    x = 70,023,744,400/120,489
  6. Step 6: Final answer
    x = 581,162.96

Related Problems

Find third proportional to 60,244.50 and 132,310
Half scale
Find third proportional to 240,978 and 529,240
Double scale
Find third proportional to 120,491 and 264,624
Similar ratio
Find third proportional to 180,733.50 and 396,930
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.