Home / 90,457-196,985

Finding the Third Proportional to 90,457 and 196,985

Calculator

Solution

The third proportional to 90,457 and 196,985 is: 428,967.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,457 : 196,985 = 196,985 : x
  2. Step 2: Convert to fraction form
    90,457/196,985 = 196,985/x
  3. Step 3: Cross multiply
    90,457x = 196,985 × 196,985
  4. Step 4: Simplify right side
    90,457x = 38,803,090,225
  5. Step 5: Solve for x
    x = 38,803,090,225/90,457
  6. Step 6: Final answer
    x = 428,967.25

Related Problems

Find third proportional to 45,228.50 and 98,492.50
Half scale
Find third proportional to 180,914 and 393,970
Double scale
Find third proportional to 90,459 and 196,989
Similar ratio
Find third proportional to 135,685.50 and 295,477.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.