Finding the Fourth Proportional to 389,651.36, 537,713.61 and 217,571.99
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Solution
The fourth proportional to 389,651.36, 537,713.61 and 217,571.99 is: 300,246.41
Step by Step Solution
- Step 1: Write the proportion equation
389,651.36 : 537,713.61 = 217,571.99 : x - Step 2: Convert to fraction form
389,651.36/537,713.61 = 217,571.99/x - Step 3: Cross multiply
389,651.36x = 537,713.61 × 217,571.99 - Step 4: Simplify right side
389,651.36x = 116,991,420,177.78 - Step 5: Solve for x
x = 116,991,420,177.78/389,651.36 - Step 6: Final answer
x = 300,246.41
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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.