Home / 78,215-170,398

Finding the Third Proportional to 78,215 and 170,398

Calculator

Solution

The third proportional to 78,215 and 170,398 is: 371,226.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,215 : 170,398 = 170,398 : x
  2. Step 2: Convert to fraction form
    78,215/170,398 = 170,398/x
  3. Step 3: Cross multiply
    78,215x = 170,398 × 170,398
  4. Step 4: Simplify right side
    78,215x = 29,035,478,404
  5. Step 5: Solve for x
    x = 29,035,478,404/78,215
  6. Step 6: Final answer
    x = 371,226.47

Related Problems

Find third proportional to 39,107.50 and 85,199
Half scale
Find third proportional to 156,430 and 340,796
Double scale
Find third proportional to 78,217 and 170,402
Similar ratio
Find third proportional to 117,322.50 and 255,597
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.