Home / 161-420.50

Finding the Third Proportional to 161 and 420.50

Calculator

Solution

The third proportional to 161 and 420.50 is: 1,098.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    161 : 420.50 = 420.50 : x
  2. Step 2: Convert to fraction form
    161/420.50 = 420.50/x
  3. Step 3: Cross multiply
    161x = 420.50 × 420.50
  4. Step 4: Simplify right side
    161x = 176,820.25
  5. Step 5: Solve for x
    x = 176,820.25/161
  6. Step 6: Final answer
    x = 1,098.26

Related Problems

Find third proportional to 80.50 and 210.25
Half scale
Find third proportional to 322 and 841
Double scale
Find third proportional to 163 and 426
Similar ratio
Find third proportional to 241.50 and 630.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.