Finding the Fourth Proportional to 266,163.20, 399,439.20 and 187,431.20
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Solution
The fourth proportional to 266,163.20, 399,439.20 and 187,431.20 is: 281,283.70
Step by Step Solution
- Step 1: Write the proportion equation
266,163.20 : 399,439.20 = 187,431.20 : x - Step 2: Convert to fraction form
266,163.20/399,439.20 = 187,431.20/x - Step 3: Cross multiply
266,163.20x = 399,439.20 × 187,431.20 - Step 4: Simplify right side
266,163.20x = 74,867,368,583.04 - Step 5: Solve for x
x = 74,867,368,583.04/266,163.20 - Step 6: Final answer
x = 281,283.70
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1.5x scale
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.