Home / 178,372-389,912

Finding the Third Proportional to 178,372 and 389,912

Calculator

Solution

The third proportional to 178,372 and 389,912 is: 852,327.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,372 : 389,912 = 389,912 : x
  2. Step 2: Convert to fraction form
    178,372/389,912 = 389,912/x
  3. Step 3: Cross multiply
    178,372x = 389,912 × 389,912
  4. Step 4: Simplify right side
    178,372x = 152,031,367,744
  5. Step 5: Solve for x
    x = 152,031,367,744/178,372
  6. Step 6: Final answer
    x = 852,327.54

Related Problems

Find third proportional to 89,186 and 194,956
Half scale
Find third proportional to 356,744 and 779,824
Double scale
Find third proportional to 178,374 and 389,916
Similar ratio
Find third proportional to 267,558 and 584,868
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.