Home / 231,820-330,880

Finding the Third Proportional to 231,820 and 330,880

Calculator

Solution

The third proportional to 231,820 and 330,880 is: 472,269.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,820 : 330,880 = 330,880 : x
  2. Step 2: Convert to fraction form
    231,820/330,880 = 330,880/x
  3. Step 3: Cross multiply
    231,820x = 330,880 × 330,880
  4. Step 4: Simplify right side
    231,820x = 109,481,574,400
  5. Step 5: Solve for x
    x = 109,481,574,400/231,820
  6. Step 6: Final answer
    x = 472,269.75

Related Problems

Find third proportional to 115,910 and 165,440
Half scale
Find third proportional to 463,640 and 661,760
Double scale
Find third proportional to 231,822 and 330,883
Similar ratio
Find third proportional to 347,730 and 496,320
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.