Home / 311,938-472,310

Finding the Third Proportional to 311,938 and 472,310

Calculator

Solution

The third proportional to 311,938 and 472,310 is: 715,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,938 : 472,310 = 472,310 : x
  2. Step 2: Convert to fraction form
    311,938/472,310 = 472,310/x
  3. Step 3: Cross multiply
    311,938x = 472,310 × 472,310
  4. Step 4: Simplify right side
    311,938x = 223,076,736,100
  5. Step 5: Solve for x
    x = 223,076,736,100/311,938
  6. Step 6: Final answer
    x = 715,131.65

Related Problems

Find third proportional to 155,969 and 236,155
Half scale
Find third proportional to 623,876 and 944,620
Double scale
Find third proportional to 311,940 and 472,313
Similar ratio
Find third proportional to 467,907 and 708,465
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.