Home / 140,138-215,391

Finding the Third Proportional to 140,138 and 215,391

Calculator

Solution

The third proportional to 140,138 and 215,391 is: 331,054.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,138 : 215,391 = 215,391 : x
  2. Step 2: Convert to fraction form
    140,138/215,391 = 215,391/x
  3. Step 3: Cross multiply
    140,138x = 215,391 × 215,391
  4. Step 4: Simplify right side
    140,138x = 46,393,282,881
  5. Step 5: Solve for x
    x = 46,393,282,881/140,138
  6. Step 6: Final answer
    x = 331,054.27

Related Problems

Find third proportional to 70,069 and 107,695.50
Half scale
Find third proportional to 280,276 and 430,782
Double scale
Find third proportional to 140,140 and 215,394
Similar ratio
Find third proportional to 210,207 and 323,086.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.