Finding the Fourth Proportional to 287,485.65, 431,311.68 and 118,974.87
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Solution
The fourth proportional to 287,485.65, 431,311.68 and 118,974.87 is: 178,496.74
Step by Step Solution
- Step 1: Write the proportion equation
287,485.65 : 431,311.68 = 118,974.87 : x - Step 2: Convert to fraction form
287,485.65/431,311.68 = 118,974.87/x - Step 3: Cross multiply
287,485.65x = 431,311.68 × 118,974.87 - Step 4: Simplify right side
287,485.65x = 51,315,251,057.48 - Step 5: Solve for x
x = 51,315,251,057.48/287,485.65 - Step 6: Final answer
x = 178,496.74
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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.