Finding the Fourth Proportional to 221,677.20, 305,916.36 and 126,190.08
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Solution
The fourth proportional to 221,677.20, 305,916.36 and 126,190.08 is: 174,143.35
Step by Step Solution
- Step 1: Write the proportion equation
221,677.20 : 305,916.36 = 126,190.08 : x - Step 2: Convert to fraction form
221,677.20/305,916.36 = 126,190.08/x - Step 3: Cross multiply
221,677.20x = 305,916.36 × 126,190.08 - Step 4: Simplify right side
221,677.20x = 38,603,609,941.71 - Step 5: Solve for x
x = 38,603,609,941.71/221,677.20 - Step 6: Final answer
x = 174,143.35
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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.