Home / 179,770-390,915

Finding the Third Proportional to 179,770 and 390,915

Calculator

Solution

The third proportional to 179,770 and 390,915 is: 850,055.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,770 : 390,915 = 390,915 : x
  2. Step 2: Convert to fraction form
    179,770/390,915 = 390,915/x
  3. Step 3: Cross multiply
    179,770x = 390,915 × 390,915
  4. Step 4: Simplify right side
    179,770x = 152,814,537,225
  5. Step 5: Solve for x
    x = 152,814,537,225/179,770
  6. Step 6: Final answer
    x = 850,055.83

Related Problems

Find third proportional to 89,885 and 195,457.50
Half scale
Find third proportional to 359,540 and 781,830
Double scale
Find third proportional to 179,772 and 390,919
Similar ratio
Find third proportional to 269,655 and 586,372.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.