Home / 275,217-421,030

Finding the Third Proportional to 275,217 and 421,030

Calculator

Solution

The third proportional to 275,217 and 421,030 is: 644,096.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,217 : 421,030 = 421,030 : x
  2. Step 2: Convert to fraction form
    275,217/421,030 = 421,030/x
  3. Step 3: Cross multiply
    275,217x = 421,030 × 421,030
  4. Step 4: Simplify right side
    275,217x = 177,266,260,900
  5. Step 5: Solve for x
    x = 177,266,260,900/275,217
  6. Step 6: Final answer
    x = 644,096.33

Related Problems

Find third proportional to 137,608.50 and 210,515
Half scale
Find third proportional to 550,434 and 842,060
Double scale
Find third proportional to 275,219 and 421,033
Similar ratio
Find third proportional to 412,825.50 and 631,545
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.