Home / 118,978-257,557

Finding the Third Proportional to 118,978 and 257,557

Calculator

Solution

The third proportional to 118,978 and 257,557 is: 557,545.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,978 : 257,557 = 257,557 : x
  2. Step 2: Convert to fraction form
    118,978/257,557 = 257,557/x
  3. Step 3: Cross multiply
    118,978x = 257,557 × 257,557
  4. Step 4: Simplify right side
    118,978x = 66,335,608,249
  5. Step 5: Solve for x
    x = 66,335,608,249/118,978
  6. Step 6: Final answer
    x = 557,545.16

Related Problems

Find third proportional to 59,489 and 128,778.50
Half scale
Find third proportional to 237,956 and 515,114
Double scale
Find third proportional to 118,980 and 257,561
Similar ratio
Find third proportional to 178,467 and 386,335.50
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.