Finding the Fourth Proportional to 319,689.26, 479,529.71 and 91,990.82
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Solution
The fourth proportional to 319,689.26, 479,529.71 and 91,990.82 is: 137,985.02
Step by Step Solution
- Step 1: Write the proportion equation
319,689.26 : 479,529.71 = 91,990.82 : x - Step 2: Convert to fraction form
319,689.26/479,529.71 = 91,990.82/x - Step 3: Cross multiply
319,689.26x = 479,529.71 × 91,990.82 - Step 4: Simplify right side
319,689.26x = 44,112,328,379.66 - Step 5: Solve for x
x = 44,112,328,379.66/319,689.26 - Step 6: Final answer
x = 137,985.02
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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.