Finding the Fourth Proportional to 378,430.66, 522,233.76 and 208,665.19
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Solution
The fourth proportional to 378,430.66, 522,233.76 and 208,665.19 is: 287,957.66
Step by Step Solution
- Step 1: Write the proportion equation
378,430.66 : 522,233.76 = 208,665.19 : x - Step 2: Convert to fraction form
378,430.66/522,233.76 = 208,665.19/x - Step 3: Cross multiply
378,430.66x = 522,233.76 × 208,665.19 - Step 4: Simplify right side
378,430.66x = 108,972,006,754.81 - Step 5: Solve for x
x = 108,972,006,754.81/378,430.66 - Step 6: Final answer
x = 287,957.66
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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.