Home / 111,718-239,428

Finding the Third Proportional to 111,718 and 239,428

Calculator

Solution

The third proportional to 111,718 and 239,428 is: 513,129.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,718 : 239,428 = 239,428 : x
  2. Step 2: Convert to fraction form
    111,718/239,428 = 239,428/x
  3. Step 3: Cross multiply
    111,718x = 239,428 × 239,428
  4. Step 4: Simplify right side
    111,718x = 57,325,767,184
  5. Step 5: Solve for x
    x = 57,325,767,184/111,718
  6. Step 6: Final answer
    x = 513,129.19

Related Problems

Find third proportional to 55,859 and 119,714
Half scale
Find third proportional to 223,436 and 478,856
Double scale
Find third proportional to 111,720 and 239,432
Similar ratio
Find third proportional to 167,577 and 359,142
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.