Home / 187,812-391,240

Finding the Third Proportional to 187,812 and 391,240

Calculator

Solution

The third proportional to 187,812 and 391,240 is: 815,010.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,812 : 391,240 = 391,240 : x
  2. Step 2: Convert to fraction form
    187,812/391,240 = 391,240/x
  3. Step 3: Cross multiply
    187,812x = 391,240 × 391,240
  4. Step 4: Simplify right side
    187,812x = 153,068,737,600
  5. Step 5: Solve for x
    x = 153,068,737,600/187,812
  6. Step 6: Final answer
    x = 815,010.42

Related Problems

Find third proportional to 93,906 and 195,620
Half scale
Find third proportional to 375,624 and 782,480
Double scale
Find third proportional to 187,814 and 391,244
Similar ratio
Find third proportional to 281,718 and 586,860
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.