Finding the Fourth Proportional to 398,721.99, 550,224.09 and 226,658.76
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Solution
The fourth proportional to 398,721.99, 550,224.09 and 226,658.76 is: 312,782.11
Step by Step Solution
- Step 1: Write the proportion equation
398,721.99 : 550,224.09 = 226,658.76 : x - Step 2: Convert to fraction form
398,721.99/550,224.09 = 226,658.76/x - Step 3: Cross multiply
398,721.99x = 550,224.09 × 226,658.76 - Step 4: Simplify right side
398,721.99x = 124,713,107,898.19 - Step 5: Solve for x
x = 124,713,107,898.19/398,721.99 - Step 6: Final answer
x = 312,782.11
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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.