Finding the Fourth Proportional to 261,971.80, 392,957.70 and 122,003.80
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Solution
The fourth proportional to 261,971.80, 392,957.70 and 122,003.80 is: 183,005.70
Step by Step Solution
- Step 1: Write the proportion equation
261,971.80 : 392,957.70 = 122,003.80 : x - Step 2: Convert to fraction form
261,971.80/392,957.70 = 122,003.80/x - Step 3: Cross multiply
261,971.80x = 392,957.70 × 122,003.80 - Step 4: Simplify right side
261,971.80x = 47,942,332,639.26 - Step 5: Solve for x
x = 47,942,332,639.26/261,971.80 - Step 6: Final answer
x = 183,005.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.