Home / 142,440-221,430

Finding the Third Proportional to 142,440 and 221,430

Calculator

Solution

The third proportional to 142,440 and 221,430 is: 344,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,440 : 221,430 = 221,430 : x
  2. Step 2: Convert to fraction form
    142,440/221,430 = 221,430/x
  3. Step 3: Cross multiply
    142,440x = 221,430 × 221,430
  4. Step 4: Simplify right side
    142,440x = 49,031,244,900
  5. Step 5: Solve for x
    x = 49,031,244,900/142,440
  6. Step 6: Final answer
    x = 344,223.85

Related Problems

Find third proportional to 71,220 and 110,715
Half scale
Find third proportional to 284,880 and 442,860
Double scale
Find third proportional to 142,442 and 221,433
Similar ratio
Find third proportional to 213,660 and 332,145
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.