Home / 154,830-339,171

Finding the Third Proportional to 154,830 and 339,171

Calculator

Solution

The third proportional to 154,830 and 339,171 is: 742,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,830 : 339,171 = 339,171 : x
  2. Step 2: Convert to fraction form
    154,830/339,171 = 339,171/x
  3. Step 3: Cross multiply
    154,830x = 339,171 × 339,171
  4. Step 4: Simplify right side
    154,830x = 115,036,967,241
  5. Step 5: Solve for x
    x = 115,036,967,241/154,830
  6. Step 6: Final answer
    x = 742,988.87

Related Problems

Find third proportional to 77,415 and 169,585.50
Half scale
Find third proportional to 309,660 and 678,342
Double scale
Find third proportional to 154,832 and 339,175
Similar ratio
Find third proportional to 232,245 and 508,756.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.