Home / 135,220-288,535

Finding the Third Proportional to 135,220 and 288,535

Calculator

Solution

The third proportional to 135,220 and 288,535 is: 615,681.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,220 : 288,535 = 288,535 : x
  2. Step 2: Convert to fraction form
    135,220/288,535 = 288,535/x
  3. Step 3: Cross multiply
    135,220x = 288,535 × 288,535
  4. Step 4: Simplify right side
    135,220x = 83,252,446,225
  5. Step 5: Solve for x
    x = 83,252,446,225/135,220
  6. Step 6: Final answer
    x = 615,681.45

Related Problems

Find third proportional to 67,610 and 144,267.50
Half scale
Find third proportional to 270,440 and 577,070
Double scale
Find third proportional to 135,222 and 288,539
Similar ratio
Find third proportional to 202,830 and 432,802.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.