Home / 321,036-490,102

Finding the Third Proportional to 321,036 and 490,102

Calculator

Solution

The third proportional to 321,036 and 490,102 is: 748,202.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,036 : 490,102 = 490,102 : x
  2. Step 2: Convert to fraction form
    321,036/490,102 = 490,102/x
  3. Step 3: Cross multiply
    321,036x = 490,102 × 490,102
  4. Step 4: Simplify right side
    321,036x = 240,199,970,404
  5. Step 5: Solve for x
    x = 240,199,970,404/321,036
  6. Step 6: Final answer
    x = 748,202.60

Related Problems

Find third proportional to 160,518 and 245,051
Half scale
Find third proportional to 642,072 and 980,204
Double scale
Find third proportional to 321,038 and 490,105
Similar ratio
Find third proportional to 481,554 and 735,153
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.