Home / 136,890-288,603

Finding the Third Proportional to 136,890 and 288,603

Calculator

Solution

The third proportional to 136,890 and 288,603 is: 608,457.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,890 : 288,603 = 288,603 : x
  2. Step 2: Convert to fraction form
    136,890/288,603 = 288,603/x
  3. Step 3: Cross multiply
    136,890x = 288,603 × 288,603
  4. Step 4: Simplify right side
    136,890x = 83,291,691,609
  5. Step 5: Solve for x
    x = 83,291,691,609/136,890
  6. Step 6: Final answer
    x = 608,457.09

Related Problems

Find third proportional to 68,445 and 144,301.50
Half scale
Find third proportional to 273,780 and 577,206
Double scale
Find third proportional to 136,892 and 288,607
Similar ratio
Find third proportional to 205,335 and 432,904.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.