Home / 275,278-402,290

Finding the Third Proportional to 275,278 and 402,290

Calculator

Solution

The third proportional to 275,278 and 402,290 is: 587,904.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,278 : 402,290 = 402,290 : x
  2. Step 2: Convert to fraction form
    275,278/402,290 = 402,290/x
  3. Step 3: Cross multiply
    275,278x = 402,290 × 402,290
  4. Step 4: Simplify right side
    275,278x = 161,837,244,100
  5. Step 5: Solve for x
    x = 161,837,244,100/275,278
  6. Step 6: Final answer
    x = 587,904.75

Related Problems

Find third proportional to 137,639 and 201,145
Half scale
Find third proportional to 550,556 and 804,580
Double scale
Find third proportional to 275,280 and 402,293
Similar ratio
Find third proportional to 412,917 and 603,435
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.