Finding the Fourth Proportional to 279,817.29, 386,135.60 and 158,958.09
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Solution
The fourth proportional to 279,817.29, 386,135.60 and 158,958.09 is: 219,355.20
Step by Step Solution
- Step 1: Write the proportion equation
279,817.29 : 386,135.60 = 158,958.09 : x - Step 2: Convert to fraction form
279,817.29/386,135.60 = 158,958.09/x - Step 3: Cross multiply
279,817.29x = 386,135.60 × 158,958.09 - Step 4: Simplify right side
279,817.29x = 61,379,376,662.21 - Step 5: Solve for x
x = 61,379,376,662.21/279,817.29 - Step 6: Final answer
x = 219,355.20
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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.