Home / 145,688-311,635

Finding the Third Proportional to 145,688 and 311,635

Calculator

Solution

The third proportional to 145,688 and 311,635 is: 666,605.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,688 : 311,635 = 311,635 : x
  2. Step 2: Convert to fraction form
    145,688/311,635 = 311,635/x
  3. Step 3: Cross multiply
    145,688x = 311,635 × 311,635
  4. Step 4: Simplify right side
    145,688x = 97,116,373,225
  5. Step 5: Solve for x
    x = 97,116,373,225/145,688
  6. Step 6: Final answer
    x = 666,605.16

Related Problems

Find third proportional to 72,844 and 155,817.50
Half scale
Find third proportional to 291,376 and 623,270
Double scale
Find third proportional to 145,690 and 311,639
Similar ratio
Find third proportional to 218,532 and 467,452.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.