Home / 211,602-287,058

Finding the Third Proportional to 211,602 and 287,058

Calculator

Solution

The third proportional to 211,602 and 287,058 is: 389,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,602 : 287,058 = 287,058 : x
  2. Step 2: Convert to fraction form
    211,602/287,058 = 287,058/x
  3. Step 3: Cross multiply
    211,602x = 287,058 × 287,058
  4. Step 4: Simplify right side
    211,602x = 82,402,295,364
  5. Step 5: Solve for x
    x = 82,402,295,364/211,602
  6. Step 6: Final answer
    x = 389,421.16

Related Problems

Find third proportional to 105,801 and 143,529
Half scale
Find third proportional to 423,204 and 574,116
Double scale
Find third proportional to 211,604 and 287,061
Similar ratio
Find third proportional to 317,403 and 430,587
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.