Home / 142,750-310,940

Finding the Third Proportional to 142,750 and 310,940

Calculator

Solution

The third proportional to 142,750 and 310,940 is: 677,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,750 : 310,940 = 310,940 : x
  2. Step 2: Convert to fraction form
    142,750/310,940 = 310,940/x
  3. Step 3: Cross multiply
    142,750x = 310,940 × 310,940
  4. Step 4: Simplify right side
    142,750x = 96,683,683,600
  5. Step 5: Solve for x
    x = 96,683,683,600/142,750
  6. Step 6: Final answer
    x = 677,293.76

Related Problems

Find third proportional to 71,375 and 155,470
Half scale
Find third proportional to 285,500 and 621,880
Double scale
Find third proportional to 142,752 and 310,944
Similar ratio
Find third proportional to 214,125 and 466,410
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.