Home / 258,276-557,328

Finding the Third Proportional to 258,276 and 557,328

Calculator

Solution

The third proportional to 258,276 and 557,328 is: 1,202,645.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,276 : 557,328 = 557,328 : x
  2. Step 2: Convert to fraction form
    258,276/557,328 = 557,328/x
  3. Step 3: Cross multiply
    258,276x = 557,328 × 557,328
  4. Step 4: Simplify right side
    258,276x = 310,614,499,584
  5. Step 5: Solve for x
    x = 310,614,499,584/258,276
  6. Step 6: Final answer
    x = 1,202,645.62

Related Problems

Find third proportional to 129,138 and 278,664
Half scale
Find third proportional to 516,552 and 1,114,656
Double scale
Find third proportional to 258,278 and 557,332
Similar ratio
Find third proportional to 387,414 and 835,992
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.