Home / 161,720-331,440

Finding the Third Proportional to 161,720 and 331,440

Calculator

Solution

The third proportional to 161,720 and 331,440 is: 679,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,720 : 331,440 = 331,440 : x
  2. Step 2: Convert to fraction form
    161,720/331,440 = 331,440/x
  3. Step 3: Cross multiply
    161,720x = 331,440 × 331,440
  4. Step 4: Simplify right side
    161,720x = 109,852,473,600
  5. Step 5: Solve for x
    x = 109,852,473,600/161,720
  6. Step 6: Final answer
    x = 679,275.75

Related Problems

Find third proportional to 80,860 and 165,720
Half scale
Find third proportional to 323,440 and 662,880
Double scale
Find third proportional to 161,722 and 331,444
Similar ratio
Find third proportional to 242,580 and 497,160
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.