Finding the Fourth Proportional to 328,529.80, 492,794.70 and 79,211.80
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Solution
The fourth proportional to 328,529.80, 492,794.70 and 79,211.80 is: 118,817.70
Step by Step Solution
- Step 1: Write the proportion equation
328,529.80 : 492,794.70 = 79,211.80 : x - Step 2: Convert to fraction form
328,529.80/492,794.70 = 79,211.80/x - Step 3: Cross multiply
328,529.80x = 492,794.70 × 79,211.80 - Step 4: Simplify right side
328,529.80x = 39,035,155,217.46 - Step 5: Solve for x
x = 39,035,155,217.46/328,529.80 - Step 6: Final answer
x = 118,817.70
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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.