Home / 139,903-299,750

Finding the Third Proportional to 139,903 and 299,750

Calculator

Solution

The third proportional to 139,903 and 299,750 is: 642,231.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,903 : 299,750 = 299,750 : x
  2. Step 2: Convert to fraction form
    139,903/299,750 = 299,750/x
  3. Step 3: Cross multiply
    139,903x = 299,750 × 299,750
  4. Step 4: Simplify right side
    139,903x = 89,850,062,500
  5. Step 5: Solve for x
    x = 89,850,062,500/139,903
  6. Step 6: Final answer
    x = 642,231.14

Related Problems

Find third proportional to 69,951.50 and 149,875
Half scale
Find third proportional to 279,806 and 599,500
Double scale
Find third proportional to 139,905 and 299,754
Similar ratio
Find third proportional to 209,854.50 and 449,625
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.