Home / 255,732-378,640

Finding the Third Proportional to 255,732 and 378,640

Calculator

Solution

The third proportional to 255,732 and 378,640 is: 560,619.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,732 : 378,640 = 378,640 : x
  2. Step 2: Convert to fraction form
    255,732/378,640 = 378,640/x
  3. Step 3: Cross multiply
    255,732x = 378,640 × 378,640
  4. Step 4: Simplify right side
    255,732x = 143,368,249,600
  5. Step 5: Solve for x
    x = 143,368,249,600/255,732
  6. Step 6: Final answer
    x = 560,619.12

Related Problems

Find third proportional to 127,866 and 189,320
Half scale
Find third proportional to 511,464 and 757,280
Double scale
Find third proportional to 255,734 and 378,643
Similar ratio
Find third proportional to 383,598 and 567,960
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.