Finding the Fourth Proportional to 318,099.08, 438,979.84 and 172,905.50
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Solution
The fourth proportional to 318,099.08, 438,979.84 and 172,905.50 is: 238,611.28
Step by Step Solution
- Step 1: Write the proportion equation
318,099.08 : 438,979.84 = 172,905.50 : x - Step 2: Convert to fraction form
318,099.08/438,979.84 = 172,905.50/x - Step 3: Cross multiply
318,099.08x = 438,979.84 × 172,905.50 - Step 4: Simplify right side
318,099.08x = 75,902,029,390.31 - Step 5: Solve for x
x = 75,902,029,390.31/318,099.08 - Step 6: Final answer
x = 238,611.28
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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.