Home / 218,697-357,111

Finding the Third Proportional to 218,697 and 357,111

Calculator

Solution

The third proportional to 218,697 and 357,111 is: 583,127.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,697 : 357,111 = 357,111 : x
  2. Step 2: Convert to fraction form
    218,697/357,111 = 357,111/x
  3. Step 3: Cross multiply
    218,697x = 357,111 × 357,111
  4. Step 4: Simplify right side
    218,697x = 127,528,266,321
  5. Step 5: Solve for x
    x = 127,528,266,321/218,697
  6. Step 6: Final answer
    x = 583,127.64

Related Problems

Find third proportional to 109,348.50 and 178,555.50
Half scale
Find third proportional to 437,394 and 714,222
Double scale
Find third proportional to 218,699 and 357,114
Similar ratio
Find third proportional to 328,045.50 and 535,666.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.