Home / 207,220-314,880

Finding the Third Proportional to 207,220 and 314,880

Calculator

Solution

The third proportional to 207,220 and 314,880 is: 478,474.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,220 : 314,880 = 314,880 : x
  2. Step 2: Convert to fraction form
    207,220/314,880 = 314,880/x
  3. Step 3: Cross multiply
    207,220x = 314,880 × 314,880
  4. Step 4: Simplify right side
    207,220x = 99,149,414,400
  5. Step 5: Solve for x
    x = 99,149,414,400/207,220
  6. Step 6: Final answer
    x = 478,474.16

Related Problems

Find third proportional to 103,610 and 157,440
Half scale
Find third proportional to 414,440 and 629,760
Double scale
Find third proportional to 207,222 and 314,883
Similar ratio
Find third proportional to 310,830 and 472,320
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.