Home / 203,648-311,520

Finding the Third Proportional to 203,648 and 311,520

Calculator

Solution

The third proportional to 203,648 and 311,520 is: 476,531.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,648 : 311,520 = 311,520 : x
  2. Step 2: Convert to fraction form
    203,648/311,520 = 311,520/x
  3. Step 3: Cross multiply
    203,648x = 311,520 × 311,520
  4. Step 4: Simplify right side
    203,648x = 97,044,710,400
  5. Step 5: Solve for x
    x = 97,044,710,400/203,648
  6. Step 6: Final answer
    x = 476,531.62

Related Problems

Find third proportional to 101,824 and 155,760
Half scale
Find third proportional to 407,296 and 623,040
Double scale
Find third proportional to 203,650 and 311,523
Similar ratio
Find third proportional to 305,472 and 467,280
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.