Finding the Fourth Proportional to 221,286.10, 305,402.26 and 135,227.38
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Solution
The fourth proportional to 221,286.10, 305,402.26 and 135,227.38 is: 186,630.55
Step by Step Solution
- Step 1: Write the proportion equation
221,286.10 : 305,402.26 = 135,227.38 : x - Step 2: Convert to fraction form
221,286.10/305,402.26 = 135,227.38/x - Step 3: Cross multiply
221,286.10x = 305,402.26 × 135,227.38 - Step 4: Simplify right side
221,286.10x = 41,298,747,465.88 - Step 5: Solve for x
x = 41,298,747,465.88/221,286.10 - Step 6: Final answer
x = 186,630.55
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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.