Home / 145,440-317,160

Finding the Third Proportional to 145,440 and 317,160

Calculator

Solution

The third proportional to 145,440 and 317,160 is: 691,628.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,440 : 317,160 = 317,160 : x
  2. Step 2: Convert to fraction form
    145,440/317,160 = 317,160/x
  3. Step 3: Cross multiply
    145,440x = 317,160 × 317,160
  4. Step 4: Simplify right side
    145,440x = 100,590,465,600
  5. Step 5: Solve for x
    x = 100,590,465,600/145,440
  6. Step 6: Final answer
    x = 691,628.61

Related Problems

Find third proportional to 72,720 and 158,580
Half scale
Find third proportional to 290,880 and 634,320
Double scale
Find third proportional to 145,442 and 317,164
Similar ratio
Find third proportional to 218,160 and 475,740
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.