Finding the Fourth Proportional to 431,790.14, 647,365.30 and 206,936.44
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Solution
The fourth proportional to 431,790.14, 647,365.30 and 206,936.44 is: 310,251.34
Step by Step Solution
- Step 1: Write the proportion equation
431,790.14 : 647,365.30 = 206,936.44 : x - Step 2: Convert to fraction form
431,790.14/647,365.30 = 206,936.44/x - Step 3: Cross multiply
431,790.14x = 647,365.30 × 206,936.44 - Step 4: Simplify right side
431,790.14x = 133,963,468,425.78 - Step 5: Solve for x
x = 133,963,468,425.78/431,790.14 - Step 6: Final answer
x = 310,251.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.