Finding the Fourth Proportional to 388,499.38, 581,653.42 and 205,715.99
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Solution
The fourth proportional to 388,499.38, 581,653.42 and 205,715.99 is: 307,993.82
Step by Step Solution
- Step 1: Write the proportion equation
388,499.38 : 581,653.42 = 205,715.99 : x - Step 2: Convert to fraction form
388,499.38/581,653.42 = 205,715.99/x - Step 3: Cross multiply
388,499.38x = 581,653.42 × 205,715.99 - Step 4: Simplify right side
388,499.38x = 119,655,409,132.19 - Step 5: Solve for x
x = 119,655,409,132.19/388,499.38 - Step 6: Final answer
x = 307,993.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.