Home / 130,419-285,840

Finding the Third Proportional to 130,419 and 285,840

Calculator

Solution

The third proportional to 130,419 and 285,840 is: 626,477.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,419 : 285,840 = 285,840 : x
  2. Step 2: Convert to fraction form
    130,419/285,840 = 285,840/x
  3. Step 3: Cross multiply
    130,419x = 285,840 × 285,840
  4. Step 4: Simplify right side
    130,419x = 81,704,505,600
  5. Step 5: Solve for x
    x = 81,704,505,600/130,419
  6. Step 6: Final answer
    x = 626,477.01

Related Problems

Find third proportional to 65,209.50 and 142,920
Half scale
Find third proportional to 260,838 and 571,680
Double scale
Find third proportional to 130,421 and 285,844
Similar ratio
Find third proportional to 195,628.50 and 428,760
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.