Home / 210,657-438,816

Finding the Third Proportional to 210,657 and 438,816

Calculator

Solution

The third proportional to 210,657 and 438,816 is: 914,090.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,657 : 438,816 = 438,816 : x
  2. Step 2: Convert to fraction form
    210,657/438,816 = 438,816/x
  3. Step 3: Cross multiply
    210,657x = 438,816 × 438,816
  4. Step 4: Simplify right side
    210,657x = 192,559,481,856
  5. Step 5: Solve for x
    x = 192,559,481,856/210,657
  6. Step 6: Final answer
    x = 914,090.12

Related Problems

Find third proportional to 105,328.50 and 219,408
Half scale
Find third proportional to 421,314 and 877,632
Double scale
Find third proportional to 210,659 and 438,820
Similar ratio
Find third proportional to 315,985.50 and 658,224
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.