Home / 124-278

Finding the Third Proportional to 124 and 278

Calculator

Solution

The third proportional to 124 and 278 is: 623.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124 : 278 = 278 : x
  2. Step 2: Convert to fraction form
    124/278 = 278/x
  3. Step 3: Cross multiply
    124x = 278 × 278
  4. Step 4: Simplify right side
    124x = 77,284
  5. Step 5: Solve for x
    x = 77,284/124
  6. Step 6: Final answer
    x = 623.26

Related Problems

Find third proportional to 62 and 139
Half scale
Find third proportional to 248 and 556
Double scale
Find third proportional to 126 and 282
Similar ratio
Find third proportional to 186 and 417
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.