Home / 168,630-390,399

Finding the Third Proportional to 168,630 and 390,399

Calculator

Solution

The third proportional to 168,630 and 390,399 is: 903,821.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,630 : 390,399 = 390,399 : x
  2. Step 2: Convert to fraction form
    168,630/390,399 = 390,399/x
  3. Step 3: Cross multiply
    168,630x = 390,399 × 390,399
  4. Step 4: Simplify right side
    168,630x = 152,411,379,201
  5. Step 5: Solve for x
    x = 152,411,379,201/168,630
  6. Step 6: Final answer
    x = 903,821.26

Related Problems

Find third proportional to 84,315 and 195,199.50
Half scale
Find third proportional to 337,260 and 780,798
Double scale
Find third proportional to 168,632 and 390,404
Similar ratio
Find third proportional to 252,945 and 585,598.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.