Finding the Fourth Proportional to 390,891.67, 586,343.68 and 154,232.30
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Solution
The fourth proportional to 390,891.67, 586,343.68 and 154,232.30 is: 231,350.89
Step by Step Solution
- Step 1: Write the proportion equation
390,891.67 : 586,343.68 = 154,232.30 : x - Step 2: Convert to fraction form
390,891.67/586,343.68 = 154,232.30/x - Step 3: Cross multiply
390,891.67x = 586,343.68 × 154,232.30 - Step 4: Simplify right side
390,891.67x = 90,433,135,437.14 - Step 5: Solve for x
x = 90,433,135,437.14/390,891.67 - Step 6: Final answer
x = 231,350.89
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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.