Finding the Fourth Proportional to 388,564.79, 536,218.79 and 218,800.13
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Solution
The fourth proportional to 388,564.79, 536,218.79 and 218,800.13 is: 301,943.82
Step by Step Solution
- Step 1: Write the proportion equation
388,564.79 : 536,218.79 = 218,800.13 : x - Step 2: Convert to fraction form
388,564.79/536,218.79 = 218,800.13/x - Step 3: Cross multiply
388,564.79x = 536,218.79 × 218,800.13 - Step 4: Simplify right side
388,564.79x = 117,324,737,185.35 - Step 5: Solve for x
x = 117,324,737,185.35/388,564.79 - Step 6: Final answer
x = 301,943.82
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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.