Finding the Fourth Proportional to 318,669.36, 478,299.42 and 161,008.62
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Solution
The fourth proportional to 318,669.36, 478,299.42 and 161,008.62 is: 241,662.17
Step by Step Solution
- Step 1: Write the proportion equation
318,669.36 : 478,299.42 = 161,008.62 : x - Step 2: Convert to fraction form
318,669.36/478,299.42 = 161,008.62/x - Step 3: Cross multiply
318,669.36x = 478,299.42 × 161,008.62 - Step 4: Simplify right side
318,669.36x = 77,010,329,561.00 - Step 5: Solve for x
x = 77,010,329,561.00/318,669.36 - Step 6: Final answer
x = 241,662.17
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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.