Home / 312,720-469,080-137,616

Finding the Fourth Proportional to 312,720, 469,080 and 137,616

Calculator

Solution

The fourth proportional to 312,720, 469,080 and 137,616 is: 206,424

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,720 : 469,080 = 137,616 : x
  2. Step 2: Convert to fraction form
    312,720/469,080 = 137,616/x
  3. Step 3: Cross multiply
    312,720x = 469,080 × 137,616
  4. Step 4: Simplify right side
    312,720x = 64,552,913,280
  5. Step 5: Solve for x
    x = 64,552,913,280/312,720
  6. Step 6: Final answer
    x = 206,424

Related Problems

Find fourth proportional to 156,360, 234,540 and 68,808
Half scale
Find fourth proportional to 625,440, 938,160 and 275,232
Double scale
Find fourth proportional to 312,721, 469,081.50 and 137,617
Similar ratio
Find fourth proportional to 469,080, 703,620 and 206,424
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.