Finding the Fourth Proportional to 236,211.61, 325,973.94 and 128,782.42
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Solution
The fourth proportional to 236,211.61, 325,973.94 and 128,782.42 is: 177,720.79
Step by Step Solution
- Step 1: Write the proportion equation
236,211.61 : 325,973.94 = 128,782.42 : x - Step 2: Convert to fraction form
236,211.61/325,973.94 = 128,782.42/x - Step 3: Cross multiply
236,211.61x = 325,973.94 × 128,782.42 - Step 4: Simplify right side
236,211.61x = 41,979,712,850.13 - Step 5: Solve for x
x = 41,979,712,850.13/236,211.61 - Step 6: Final answer
x = 177,720.79
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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.