Finding the Fourth Proportional to 388,900.75, 536,683.40 and 210,052.75
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Solution
The fourth proportional to 388,900.75, 536,683.40 and 210,052.75 is: 289,872.99
Step by Step Solution
- Step 1: Write the proportion equation
388,900.75 : 536,683.40 = 210,052.75 : x - Step 2: Convert to fraction form
388,900.75/536,683.40 = 210,052.75/x - Step 3: Cross multiply
388,900.75x = 536,683.40 × 210,052.75 - Step 4: Simplify right side
388,900.75x = 112,731,822,999.09 - Step 5: Solve for x
x = 112,731,822,999.09/388,900.75 - Step 6: Final answer
x = 289,872.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.