Home / 319,172-485,391

Finding the Third Proportional to 319,172 and 485,391

Calculator

Solution

The third proportional to 319,172 and 485,391 is: 738,173.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,172 : 485,391 = 485,391 : x
  2. Step 2: Convert to fraction form
    319,172/485,391 = 485,391/x
  3. Step 3: Cross multiply
    319,172x = 485,391 × 485,391
  4. Step 4: Simplify right side
    319,172x = 235,604,422,881
  5. Step 5: Solve for x
    x = 235,604,422,881/319,172
  6. Step 6: Final answer
    x = 738,173.85

Related Problems

Find third proportional to 159,586 and 242,695.50
Half scale
Find third proportional to 638,344 and 970,782
Double scale
Find third proportional to 319,174 and 485,394
Similar ratio
Find third proportional to 478,758 and 728,086.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.