Home / 275,550-390,010

Finding the Third Proportional to 275,550 and 390,010

Calculator

Solution

The third proportional to 275,550 and 390,010 is: 552,015.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,550 : 390,010 = 390,010 : x
  2. Step 2: Convert to fraction form
    275,550/390,010 = 390,010/x
  3. Step 3: Cross multiply
    275,550x = 390,010 × 390,010
  4. Step 4: Simplify right side
    275,550x = 152,107,800,100
  5. Step 5: Solve for x
    x = 152,107,800,100/275,550
  6. Step 6: Final answer
    x = 552,015.24

Related Problems

Find third proportional to 137,775 and 195,005
Half scale
Find third proportional to 551,100 and 780,020
Double scale
Find third proportional to 275,552 and 390,013
Similar ratio
Find third proportional to 413,325 and 585,015
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.