Home / 258,004-388,518

Finding the Third Proportional to 258,004 and 388,518

Calculator

Solution

The third proportional to 258,004 and 388,518 is: 585,053.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,004 : 388,518 = 388,518 : x
  2. Step 2: Convert to fraction form
    258,004/388,518 = 388,518/x
  3. Step 3: Cross multiply
    258,004x = 388,518 × 388,518
  4. Step 4: Simplify right side
    258,004x = 150,946,236,324
  5. Step 5: Solve for x
    x = 150,946,236,324/258,004
  6. Step 6: Final answer
    x = 585,053.86

Related Problems

Find third proportional to 129,002 and 194,259
Half scale
Find third proportional to 516,008 and 777,036
Double scale
Find third proportional to 258,006 and 388,521
Similar ratio
Find third proportional to 387,006 and 582,777
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.