Home / 212,488-311,072

Finding the Third Proportional to 212,488 and 311,072

Calculator

Solution

The third proportional to 212,488 and 311,072 is: 455,394.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,488 : 311,072 = 311,072 : x
  2. Step 2: Convert to fraction form
    212,488/311,072 = 311,072/x
  3. Step 3: Cross multiply
    212,488x = 311,072 × 311,072
  4. Step 4: Simplify right side
    212,488x = 96,765,789,184
  5. Step 5: Solve for x
    x = 96,765,789,184/212,488
  6. Step 6: Final answer
    x = 455,394.14

Related Problems

Find third proportional to 106,244 and 155,536
Half scale
Find third proportional to 424,976 and 622,144
Double scale
Find third proportional to 212,490 and 311,075
Similar ratio
Find third proportional to 318,732 and 466,608
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.