Home / 299,980.50-421,903.50

Finding the Third Proportional to 299,980.50 and 421,903.50

Calculator

Solution

The third proportional to 299,980.50 and 421,903.50 is: 593,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,980.50 : 421,903.50 = 421,903.50 : x
  2. Step 2: Convert to fraction form
    299,980.50/421,903.50 = 421,903.50/x
  3. Step 3: Cross multiply
    299,980.50x = 421,903.50 × 421,903.50
  4. Step 4: Simplify right side
    299,980.50x = 178,002,563,312.25
  5. Step 5: Solve for x
    x = 178,002,563,312.25/299,980.50
  6. Step 6: Final answer
    x = 593,380.45

Related Problems

Find third proportional to 149,990.25 and 210,951.75
Half scale
Find third proportional to 599,961 and 843,807
Double scale
Find third proportional to 299,983 and 421,906
Similar ratio
Find third proportional to 449,970.75 and 632,855.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.