Finding the Fourth Proportional to 316,405.98, 474,556.05 and 138,865.32
Calculator
Solution
The fourth proportional to 316,405.98, 474,556.05 and 138,865.32 is: 208,274.75
Step by Step Solution
- Step 1: Write the proportion equation
316,405.98 : 474,556.05 = 138,865.32 : x - Step 2: Convert to fraction form
316,405.98/474,556.05 = 138,865.32/x - Step 3: Cross multiply
316,405.98x = 474,556.05 × 138,865.32 - Step 4: Simplify right side
316,405.98x = 65,899,377,741.19 - Step 5: Solve for x
x = 65,899,377,741.19/316,405.98 - Step 6: Final answer
x = 208,274.75
Related Problems
Find fourth proportional to 158,202.99, 237,278.03 and 69,432.66
Half scale
Find fourth proportional to 632,811.96, 949,112.10 and 277,730.64
Double scale
Find fourth proportional to 316,406.98, 474,557.55 and 138,866.32
Similar ratio
Find fourth proportional to 474,608.97, 711,834.08 and 208,297.98
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.