Finding the Fourth Proportional to 428,837.12, 591,866.09 and 237,912.02
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Solution
The fourth proportional to 428,837.12, 591,866.09 and 237,912.02 is: 328,357.90
Step by Step Solution
- Step 1: Write the proportion equation
428,837.12 : 591,866.09 = 237,912.02 : x - Step 2: Convert to fraction form
428,837.12/591,866.09 = 237,912.02/x - Step 3: Cross multiply
428,837.12x = 591,866.09 × 237,912.02 - Step 4: Simplify right side
428,837.12x = 140,812,052,892.51 - Step 5: Solve for x
x = 140,812,052,892.51/428,837.12 - Step 6: Final answer
x = 328,357.90
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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.