Finding the Fourth Proportional to 388,497.38, 581,650.43 and 205,713.99
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Solution
The fourth proportional to 388,497.38, 581,650.43 and 205,713.99 is: 307,990.83
Step by Step Solution
- Step 1: Write the proportion equation
388,497.38 : 581,650.43 = 205,713.99 : x - Step 2: Convert to fraction form
388,497.38/581,650.43 = 205,713.99/x - Step 3: Cross multiply
388,497.38x = 581,650.43 × 205,713.99 - Step 4: Simplify right side
388,497.38x = 119,653,629,711.95 - Step 5: Solve for x
x = 119,653,629,711.95/388,497.38 - Step 6: Final answer
x = 307,990.83
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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.