Home / 243,300-387,432

Finding the Third Proportional to 243,300 and 387,432

Calculator

Solution

The third proportional to 243,300 and 387,432 is: 616,948.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,300 : 387,432 = 387,432 : x
  2. Step 2: Convert to fraction form
    243,300/387,432 = 387,432/x
  3. Step 3: Cross multiply
    243,300x = 387,432 × 387,432
  4. Step 4: Simplify right side
    243,300x = 150,103,554,624
  5. Step 5: Solve for x
    x = 150,103,554,624/243,300
  6. Step 6: Final answer
    x = 616,948.44

Related Problems

Find third proportional to 121,650 and 193,716
Half scale
Find third proportional to 486,600 and 774,864
Double scale
Find third proportional to 243,302 and 387,435
Similar ratio
Find third proportional to 364,950 and 581,148
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.