Home / 257,889-394,243.50

Finding the Third Proportional to 257,889 and 394,243.50

Calculator

Solution

The third proportional to 257,889 and 394,243.50 is: 602,693.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,889 : 394,243.50 = 394,243.50 : x
  2. Step 2: Convert to fraction form
    257,889/394,243.50 = 394,243.50/x
  3. Step 3: Cross multiply
    257,889x = 394,243.50 × 394,243.50
  4. Step 4: Simplify right side
    257,889x = 155,427,937,292.25
  5. Step 5: Solve for x
    x = 155,427,937,292.25/257,889
  6. Step 6: Final answer
    x = 602,693.16

Related Problems

Find third proportional to 128,944.50 and 197,121.75
Half scale
Find third proportional to 515,778 and 788,487
Double scale
Find third proportional to 257,891 and 394,247
Similar ratio
Find third proportional to 386,833.50 and 591,365.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.