Home / 208,928-318,585

Finding the Third Proportional to 208,928 and 318,585

Calculator

Solution

The third proportional to 208,928 and 318,585 is: 485,796.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,928 : 318,585 = 318,585 : x
  2. Step 2: Convert to fraction form
    208,928/318,585 = 318,585/x
  3. Step 3: Cross multiply
    208,928x = 318,585 × 318,585
  4. Step 4: Simplify right side
    208,928x = 101,496,402,225
  5. Step 5: Solve for x
    x = 101,496,402,225/208,928
  6. Step 6: Final answer
    x = 485,796.07

Related Problems

Find third proportional to 104,464 and 159,292.50
Half scale
Find third proportional to 417,856 and 637,170
Double scale
Find third proportional to 208,930 and 318,588
Similar ratio
Find third proportional to 313,392 and 477,877.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.