Home / 225,940-338,910-78,196

Finding the Fourth Proportional to 225,940, 338,910 and 78,196

Calculator

Solution

The fourth proportional to 225,940, 338,910 and 78,196 is: 117,294

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,940 : 338,910 = 78,196 : x
  2. Step 2: Convert to fraction form
    225,940/338,910 = 78,196/x
  3. Step 3: Cross multiply
    225,940x = 338,910 × 78,196
  4. Step 4: Simplify right side
    225,940x = 26,501,406,360
  5. Step 5: Solve for x
    x = 26,501,406,360/225,940
  6. Step 6: Final answer
    x = 117,294

Related Problems

Find fourth proportional to 112,970, 169,455 and 39,098
Half scale
Find fourth proportional to 451,880, 677,820 and 156,392
Double scale
Find fourth proportional to 225,941, 338,911.50 and 78,197
Similar ratio
Find fourth proportional to 338,910, 508,365 and 117,294
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.