Finding the Fourth Proportional to 478,517.68, 717,738.85 and 208,639.45
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Solution
The fourth proportional to 478,517.68, 717,738.85 and 208,639.45 is: 312,942.75
Step by Step Solution
- Step 1: Write the proportion equation
478,517.68 : 717,738.85 = 208,639.45 : x - Step 2: Convert to fraction form
478,517.68/717,738.85 = 208,639.45/x - Step 3: Cross multiply
478,517.68x = 717,738.85 × 208,639.45 - Step 4: Simplify right side
478,517.68x = 149,748,638,907.63 - Step 5: Solve for x
x = 149,748,638,907.63/478,517.68 - Step 6: Final answer
x = 312,942.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.