Home / 239,830-518,080

Finding the Third Proportional to 239,830 and 518,080

Calculator

Solution

The third proportional to 239,830 and 518,080 is: 1,119,154.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,830 : 518,080 = 518,080 : x
  2. Step 2: Convert to fraction form
    239,830/518,080 = 518,080/x
  3. Step 3: Cross multiply
    239,830x = 518,080 × 518,080
  4. Step 4: Simplify right side
    239,830x = 268,406,886,400
  5. Step 5: Solve for x
    x = 268,406,886,400/239,830
  6. Step 6: Final answer
    x = 1,119,154.76

Related Problems

Find third proportional to 119,915 and 259,040
Half scale
Find third proportional to 479,660 and 1,036,160
Double scale
Find third proportional to 239,832 and 518,084
Similar ratio
Find third proportional to 359,745 and 777,120
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.