Finding the Fourth Proportional to 207,409.80, 286,221.42 and 121,419.48
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Solution
The fourth proportional to 207,409.80, 286,221.42 and 121,419.48 is: 167,556.48
Step by Step Solution
- Step 1: Write the proportion equation
207,409.80 : 286,221.42 = 121,419.48 : x - Step 2: Convert to fraction form
207,409.80/286,221.42 = 121,419.48/x - Step 3: Cross multiply
207,409.80x = 286,221.42 × 121,419.48 - Step 4: Simplify right side
207,409.80x = 34,752,855,981.26 - Step 5: Solve for x
x = 34,752,855,981.26/207,409.80 - Step 6: Final answer
x = 167,556.48
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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.