Home / 139,312-215,246

Finding the Third Proportional to 139,312 and 215,246

Calculator

Solution

The third proportional to 139,312 and 215,246 is: 332,568.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,312 : 215,246 = 215,246 : x
  2. Step 2: Convert to fraction form
    139,312/215,246 = 215,246/x
  3. Step 3: Cross multiply
    139,312x = 215,246 × 215,246
  4. Step 4: Simplify right side
    139,312x = 46,330,840,516
  5. Step 5: Solve for x
    x = 46,330,840,516/139,312
  6. Step 6: Final answer
    x = 332,568.91

Related Problems

Find third proportional to 69,656 and 107,623
Half scale
Find third proportional to 278,624 and 430,492
Double scale
Find third proportional to 139,314 and 215,249
Similar ratio
Find third proportional to 208,968 and 322,869
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.