Finding the Fourth Proportional to 431,783.62, 647,355.52 and 206,929.96
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Solution
The fourth proportional to 431,783.62, 647,355.52 and 206,929.96 is: 310,241.62
Step by Step Solution
- Step 1: Write the proportion equation
431,783.62 : 647,355.52 = 206,929.96 : x - Step 2: Convert to fraction form
431,783.62/647,355.52 = 206,929.96/x - Step 3: Cross multiply
431,783.62x = 647,355.52 × 206,929.96 - Step 4: Simplify right side
431,783.62x = 133,957,251,859.38 - Step 5: Solve for x
x = 133,957,251,859.38/431,783.62 - Step 6: Final answer
x = 310,241.62
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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.