Home / 280,518-424,134

Finding the Third Proportional to 280,518 and 424,134

Calculator

Solution

The third proportional to 280,518 and 424,134 is: 641,276.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,518 : 424,134 = 424,134 : x
  2. Step 2: Convert to fraction form
    280,518/424,134 = 424,134/x
  3. Step 3: Cross multiply
    280,518x = 424,134 × 424,134
  4. Step 4: Simplify right side
    280,518x = 179,889,649,956
  5. Step 5: Solve for x
    x = 179,889,649,956/280,518
  6. Step 6: Final answer
    x = 641,276.67

Related Problems

Find third proportional to 140,259 and 212,067
Half scale
Find third proportional to 561,036 and 848,268
Double scale
Find third proportional to 280,520 and 424,137
Similar ratio
Find third proportional to 420,777 and 636,201
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.