Home / 209,076-315,560

Finding the Third Proportional to 209,076 and 315,560

Calculator

Solution

The third proportional to 209,076 and 315,560 is: 476,277.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,076 : 315,560 = 315,560 : x
  2. Step 2: Convert to fraction form
    209,076/315,560 = 315,560/x
  3. Step 3: Cross multiply
    209,076x = 315,560 × 315,560
  4. Step 4: Simplify right side
    209,076x = 99,578,113,600
  5. Step 5: Solve for x
    x = 99,578,113,600/209,076
  6. Step 6: Final answer
    x = 476,277.11

Related Problems

Find third proportional to 104,538 and 157,780
Half scale
Find third proportional to 418,152 and 631,120
Double scale
Find third proportional to 209,078 and 315,563
Similar ratio
Find third proportional to 313,614 and 473,340
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.