Home / 145,976-315,940

Finding the Third Proportional to 145,976 and 315,940

Calculator

Solution

The third proportional to 145,976 and 315,940 is: 683,797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,976 : 315,940 = 315,940 : x
  2. Step 2: Convert to fraction form
    145,976/315,940 = 315,940/x
  3. Step 3: Cross multiply
    145,976x = 315,940 × 315,940
  4. Step 4: Simplify right side
    145,976x = 99,818,083,600
  5. Step 5: Solve for x
    x = 99,818,083,600/145,976
  6. Step 6: Final answer
    x = 683,797.91

Related Problems

Find third proportional to 72,988 and 157,970
Half scale
Find third proportional to 291,952 and 631,880
Double scale
Find third proportional to 145,978 and 315,944
Similar ratio
Find third proportional to 218,964 and 473,910
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.