Finding the Fourth Proportional to 305,533.36, 421,686.71 and 178,208.94
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Solution
The fourth proportional to 305,533.36, 421,686.71 and 178,208.94 is: 245,957.89
Step by Step Solution
- Step 1: Write the proportion equation
305,533.36 : 421,686.71 = 178,208.94 : x - Step 2: Convert to fraction form
305,533.36/421,686.71 = 178,208.94/x - Step 3: Cross multiply
305,533.36x = 421,686.71 × 178,208.94 - Step 4: Simplify right side
305,533.36x = 75,148,341,601.19 - Step 5: Solve for x
x = 75,148,341,601.19/305,533.36 - Step 6: Final answer
x = 245,957.89
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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.