Finding the Fourth Proportional to 319,908.75, 479,861.76 and 130,326.84
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Solution
The fourth proportional to 319,908.75, 479,861.76 and 130,326.84 is: 195,489.70
Step by Step Solution
- Step 1: Write the proportion equation
319,908.75 : 479,861.76 = 130,326.84 : x - Step 2: Convert to fraction form
319,908.75/479,861.76 = 130,326.84/x - Step 3: Cross multiply
319,908.75x = 479,861.76 × 130,326.84 - Step 4: Simplify right side
319,908.75x = 62,538,866,817.64 - Step 5: Solve for x
x = 62,538,866,817.64/319,908.75 - Step 6: Final answer
x = 195,489.70
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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.