Home / 178,911-387,414

Finding the Third Proportional to 178,911 and 387,414

Calculator

Solution

The third proportional to 178,911 and 387,414 is: 838,906.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,911 : 387,414 = 387,414 : x
  2. Step 2: Convert to fraction form
    178,911/387,414 = 387,414/x
  3. Step 3: Cross multiply
    178,911x = 387,414 × 387,414
  4. Step 4: Simplify right side
    178,911x = 150,089,607,396
  5. Step 5: Solve for x
    x = 150,089,607,396/178,911
  6. Step 6: Final answer
    x = 838,906.54

Related Problems

Find third proportional to 89,455.50 and 193,707
Half scale
Find third proportional to 357,822 and 774,828
Double scale
Find third proportional to 178,913 and 387,418
Similar ratio
Find third proportional to 268,366.50 and 581,121
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.