Home / 142,438-307,718

Finding the Third Proportional to 142,438 and 307,718

Calculator

Solution

The third proportional to 142,438 and 307,718 is: 664,783.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,438 : 307,718 = 307,718 : x
  2. Step 2: Convert to fraction form
    142,438/307,718 = 307,718/x
  3. Step 3: Cross multiply
    142,438x = 307,718 × 307,718
  4. Step 4: Simplify right side
    142,438x = 94,690,367,524
  5. Step 5: Solve for x
    x = 94,690,367,524/142,438
  6. Step 6: Final answer
    x = 664,783.05

Related Problems

Find third proportional to 71,219 and 153,859
Half scale
Find third proportional to 284,876 and 615,436
Double scale
Find third proportional to 142,440 and 307,722
Similar ratio
Find third proportional to 213,657 and 461,577
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.