Finding the Fourth Proportional to 319,085.67, 478,711.53 and 119,421.75
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Solution
The fourth proportional to 319,085.67, 478,711.53 and 119,421.75 is: 179,163.70
Step by Step Solution
- Step 1: Write the proportion equation
319,085.67 : 478,711.53 = 119,421.75 : x - Step 2: Convert to fraction form
319,085.67/478,711.53 = 119,421.75/x - Step 3: Cross multiply
319,085.67x = 478,711.53 × 119,421.75 - Step 4: Simplify right side
319,085.67x = 57,168,568,657.78 - Step 5: Solve for x
x = 57,168,568,657.78/319,085.67 - Step 6: Final answer
x = 179,163.70
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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.