Finding the Fourth Proportional to 328,137.74, 492,234.40 and 91,480.65
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Solution
The fourth proportional to 328,137.74, 492,234.40 and 91,480.65 is: 137,228.72
Step by Step Solution
- Step 1: Write the proportion equation
328,137.74 : 492,234.40 = 91,480.65 : x - Step 2: Convert to fraction form
328,137.74/492,234.40 = 91,480.65/x - Step 3: Cross multiply
328,137.74x = 492,234.40 × 91,480.65 - Step 4: Simplify right side
328,137.74x = 45,029,920,403.19 - Step 5: Solve for x
x = 45,029,920,403.19/328,137.74 - Step 6: Final answer
x = 137,228.72
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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.