Home / 259,935-380,890

Finding the Third Proportional to 259,935 and 380,890

Calculator

Solution

The third proportional to 259,935 and 380,890 is: 558,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,935 : 380,890 = 380,890 : x
  2. Step 2: Convert to fraction form
    259,935/380,890 = 380,890/x
  3. Step 3: Cross multiply
    259,935x = 380,890 × 380,890
  4. Step 4: Simplify right side
    259,935x = 145,077,192,100
  5. Step 5: Solve for x
    x = 145,077,192,100/259,935
  6. Step 6: Final answer
    x = 558,128.73

Related Problems

Find third proportional to 129,967.50 and 190,445
Half scale
Find third proportional to 519,870 and 761,780
Double scale
Find third proportional to 259,937 and 380,893
Similar ratio
Find third proportional to 389,902.50 and 571,335
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.