Home / 238.78-517.92

Finding the Third Proportional to 238.78 and 517.92

Calculator

Solution

The third proportional to 238.78 and 517.92 is: 1,123.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.78 : 517.92 = 517.92 : x
  2. Step 2: Convert to fraction form
    238.78/517.92 = 517.92/x
  3. Step 3: Cross multiply
    238.78x = 517.92 × 517.92
  4. Step 4: Simplify right side
    238.78x = 268,243.07
  5. Step 5: Solve for x
    x = 268,243.07/238.78
  6. Step 6: Final answer
    x = 1,123.38

Related Problems

Find third proportional to 119.39 and 258.96
Half scale
Find third proportional to 477.56 and 1,035.84
Double scale
Find third proportional to 241 and 522
Similar ratio
Find third proportional to 358.17 and 776.88
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.