Home / 257,590-553,268

Finding the Third Proportional to 257,590 and 553,268

Calculator

Solution

The third proportional to 257,590 and 553,268 is: 1,188,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,590 : 553,268 = 553,268 : x
  2. Step 2: Convert to fraction form
    257,590/553,268 = 553,268/x
  3. Step 3: Cross multiply
    257,590x = 553,268 × 553,268
  4. Step 4: Simplify right side
    257,590x = 306,105,479,824
  5. Step 5: Solve for x
    x = 306,105,479,824/257,590
  6. Step 6: Final answer
    x = 1,188,343.80

Related Problems

Find third proportional to 128,795 and 276,634
Half scale
Find third proportional to 515,180 and 1,106,536
Double scale
Find third proportional to 257,592 and 553,272
Similar ratio
Find third proportional to 386,385 and 829,902
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.