Finding the Fourth Proportional to 355,043.70, 489,963.63 and 202,074.39
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Solution
The fourth proportional to 355,043.70, 489,963.63 and 202,074.39 is: 278,864.55
Step by Step Solution
- Step 1: Write the proportion equation
355,043.70 : 489,963.63 = 202,074.39 : x - Step 2: Convert to fraction form
355,043.70/489,963.63 = 202,074.39/x - Step 3: Cross multiply
355,043.70x = 489,963.63 × 202,074.39 - Step 4: Simplify right side
355,043.70x = 99,009,101,654.44 - Step 5: Solve for x
x = 99,009,101,654.44/355,043.70 - Step 6: Final answer
x = 278,864.55
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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.