Home / 140,388-210,513

Finding the Third Proportional to 140,388 and 210,513

Calculator

Solution

The third proportional to 140,388 and 210,513 is: 315,666.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,388 : 210,513 = 210,513 : x
  2. Step 2: Convert to fraction form
    140,388/210,513 = 210,513/x
  3. Step 3: Cross multiply
    140,388x = 210,513 × 210,513
  4. Step 4: Simplify right side
    140,388x = 44,315,723,169
  5. Step 5: Solve for x
    x = 44,315,723,169/140,388
  6. Step 6: Final answer
    x = 315,666.03

Related Problems

Find third proportional to 70,194 and 105,256.50
Half scale
Find third proportional to 280,776 and 421,026
Double scale
Find third proportional to 140,390 and 210,516
Similar ratio
Find third proportional to 210,582 and 315,769.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.