Home / 208,138-490,777

Finding the Third Proportional to 208,138 and 490,777

Calculator

Solution

The third proportional to 208,138 and 490,777 is: 1,157,222.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,138 : 490,777 = 490,777 : x
  2. Step 2: Convert to fraction form
    208,138/490,777 = 490,777/x
  3. Step 3: Cross multiply
    208,138x = 490,777 × 490,777
  4. Step 4: Simplify right side
    208,138x = 240,862,063,729
  5. Step 5: Solve for x
    x = 240,862,063,729/208,138
  6. Step 6: Final answer
    x = 1,157,222.92

Related Problems

Find third proportional to 104,069 and 245,388.50
Half scale
Find third proportional to 416,276 and 981,554
Double scale
Find third proportional to 208,140 and 490,782
Similar ratio
Find third proportional to 312,207 and 736,165.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.