Home / 203,653.50-315,021

Finding the Third Proportional to 203,653.50 and 315,021

Calculator

Solution

The third proportional to 203,653.50 and 315,021 is: 487,289.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,653.50 : 315,021 = 315,021 : x
  2. Step 2: Convert to fraction form
    203,653.50/315,021 = 315,021/x
  3. Step 3: Cross multiply
    203,653.50x = 315,021 × 315,021
  4. Step 4: Simplify right side
    203,653.50x = 99,238,230,441
  5. Step 5: Solve for x
    x = 99,238,230,441/203,653.50
  6. Step 6: Final answer
    x = 487,289.59

Related Problems

Find third proportional to 101,826.75 and 157,510.50
Half scale
Find third proportional to 407,307 and 630,042
Double scale
Find third proportional to 203,656 and 315,024
Similar ratio
Find third proportional to 305,480.25 and 472,531.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.