Home / 142,389-313,200

Finding the Third Proportional to 142,389 and 313,200

Calculator

Solution

The third proportional to 142,389 and 313,200 is: 688,917.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,389 : 313,200 = 313,200 : x
  2. Step 2: Convert to fraction form
    142,389/313,200 = 313,200/x
  3. Step 3: Cross multiply
    142,389x = 313,200 × 313,200
  4. Step 4: Simplify right side
    142,389x = 98,094,240,000
  5. Step 5: Solve for x
    x = 98,094,240,000/142,389
  6. Step 6: Final answer
    x = 688,917.26

Related Problems

Find third proportional to 71,194.50 and 156,600
Half scale
Find third proportional to 284,778 and 626,400
Double scale
Find third proportional to 142,391 and 313,204
Similar ratio
Find third proportional to 213,583.50 and 469,800
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.