Finding the Fourth Proportional to 229,290.53, 316,420.93 and 128,688.53
Calculator
Solution
The fourth proportional to 229,290.53, 316,420.93 and 128,688.53 is: 177,590.17
Step by Step Solution
- Step 1: Write the proportion equation
229,290.53 : 316,420.93 = 128,688.53 : x - Step 2: Convert to fraction form
229,290.53/316,420.93 = 128,688.53/x - Step 3: Cross multiply
229,290.53x = 316,420.93 × 128,688.53 - Step 4: Simplify right side
229,290.53x = 40,719,745,221.04 - Step 5: Solve for x
x = 40,719,745,221.04/229,290.53 - Step 6: Final answer
x = 177,590.17
Related Problems
Find fourth proportional to 114,645.27, 158,210.47 and 64,344.27
Half scale
Find fourth proportional to 458,581.06, 632,841.87 and 257,377.06
Double scale
Find fourth proportional to 229,291.53, 316,422.31 and 128,689.53
Similar ratio
Find fourth proportional to 343,935.80, 474,631.40 and 193,032.80
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.