Finding the Fourth Proportional to 236,389.62, 326,211.21 and 128,959.62
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Solution
The fourth proportional to 236,389.62, 326,211.21 and 128,959.62 is: 177,960.75
Step by Step Solution
- Step 1: Write the proportion equation
236,389.62 : 326,211.21 = 128,959.62 : x - Step 2: Convert to fraction form
236,389.62/326,211.21 = 128,959.62/x - Step 3: Cross multiply
236,389.62x = 326,211.21 × 128,959.62 - Step 4: Simplify right side
236,389.62x = 42,068,073,556.87 - Step 5: Solve for x
x = 42,068,073,556.87/236,389.62 - Step 6: Final answer
x = 177,960.75
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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.