Finding the Fourth Proportional to 388,135.36, 535,583.46 and 218,365.84
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Solution
The fourth proportional to 388,135.36, 535,583.46 and 218,365.84 is: 301,320.48
Step by Step Solution
- Step 1: Write the proportion equation
388,135.36 : 535,583.46 = 218,365.84 : x - Step 2: Convert to fraction form
388,135.36/535,583.46 = 218,365.84/x - Step 3: Cross multiply
388,135.36x = 535,583.46 × 218,365.84 - Step 4: Simplify right side
388,135.36x = 116,953,132,133.01 - Step 5: Solve for x
x = 116,953,132,133.01/388,135.36 - Step 6: Final answer
x = 301,320.48
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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.