Home / 209,376-315,216

Finding the Third Proportional to 209,376 and 315,216

Calculator

Solution

The third proportional to 209,376 and 315,216 is: 474,558.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,376 : 315,216 = 315,216 : x
  2. Step 2: Convert to fraction form
    209,376/315,216 = 315,216/x
  3. Step 3: Cross multiply
    209,376x = 315,216 × 315,216
  4. Step 4: Simplify right side
    209,376x = 99,361,126,656
  5. Step 5: Solve for x
    x = 99,361,126,656/209,376
  6. Step 6: Final answer
    x = 474,558.34

Related Problems

Find third proportional to 104,688 and 157,608
Half scale
Find third proportional to 418,752 and 630,432
Double scale
Find third proportional to 209,378 and 315,219
Similar ratio
Find third proportional to 314,064 and 472,824
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.