Finding the Fourth Proportional to 481,123.21, 721,845.09 and 161,306.73
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Solution
The fourth proportional to 481,123.21, 721,845.09 and 161,306.73 is: 242,013.82
Step by Step Solution
- Step 1: Write the proportion equation
481,123.21 : 721,845.09 = 161,306.73 : x - Step 2: Convert to fraction form
481,123.21/721,845.09 = 161,306.73/x - Step 3: Cross multiply
481,123.21x = 721,845.09 × 161,306.73 - Step 4: Simplify right side
481,123.21x = 116,438,467,425.23 - Step 5: Solve for x
x = 116,438,467,425.23/481,123.21 - Step 6: Final answer
x = 242,013.82
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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.