Home / 208,980-313,470-61,236

Finding the Fourth Proportional to 208,980, 313,470 and 61,236

Calculator

Solution

The fourth proportional to 208,980, 313,470 and 61,236 is: 91,854

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,980 : 313,470 = 61,236 : x
  2. Step 2: Convert to fraction form
    208,980/313,470 = 61,236/x
  3. Step 3: Cross multiply
    208,980x = 313,470 × 61,236
  4. Step 4: Simplify right side
    208,980x = 19,195,648,920
  5. Step 5: Solve for x
    x = 19,195,648,920/208,980
  6. Step 6: Final answer
    x = 91,854

Related Problems

Find fourth proportional to 104,490, 156,735 and 30,618
Half scale
Find fourth proportional to 417,960, 626,940 and 122,472
Double scale
Find fourth proportional to 208,981, 313,471.50 and 61,237
Similar ratio
Find fourth proportional to 313,470, 470,205 and 91,854
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.