Finding the Fourth Proportional to 378,497.66, 522,309.20 and 217,239.21
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Solution
The fourth proportional to 378,497.66, 522,309.20 and 217,239.21 is: 299,780.03
Step by Step Solution
- Step 1: Write the proportion equation
378,497.66 : 522,309.20 = 217,239.21 : x - Step 2: Convert to fraction form
378,497.66/522,309.20 = 217,239.21/x - Step 3: Cross multiply
378,497.66x = 522,309.20 × 217,239.21 - Step 4: Simplify right side
378,497.66x = 113,466,036,897.54 - Step 5: Solve for x
x = 113,466,036,897.54/378,497.66 - Step 6: Final answer
x = 299,780.03
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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.