Finding the Fourth Proportional to 305,431.38, 421,545.87 and 169,508.99
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Solution
The fourth proportional to 305,431.38, 421,545.87 and 169,508.99 is: 233,950.46
Step by Step Solution
- Step 1: Write the proportion equation
305,431.38 : 421,545.87 = 169,508.99 : x - Step 2: Convert to fraction form
305,431.38/421,545.87 = 169,508.99/x - Step 3: Cross multiply
305,431.38x = 421,545.87 × 169,508.99 - Step 4: Simplify right side
305,431.38x = 71,455,812,554.64 - Step 5: Solve for x
x = 71,455,812,554.64/305,431.38 - Step 6: Final answer
x = 233,950.46
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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.