Home / 199,825-427,990

Finding the Third Proportional to 199,825 and 427,990

Calculator

Solution

The third proportional to 199,825 and 427,990 is: 916,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,825 : 427,990 = 427,990 : x
  2. Step 2: Convert to fraction form
    199,825/427,990 = 427,990/x
  3. Step 3: Cross multiply
    199,825x = 427,990 × 427,990
  4. Step 4: Simplify right side
    199,825x = 183,175,440,100
  5. Step 5: Solve for x
    x = 183,175,440,100/199,825
  6. Step 6: Final answer
    x = 916,679.29

Related Problems

Find third proportional to 99,912.50 and 213,995
Half scale
Find third proportional to 399,650 and 855,980
Double scale
Find third proportional to 199,827 and 427,994
Similar ratio
Find third proportional to 299,737.50 and 641,985
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.