Finding the Fourth Proportional to 285,411.87, 428,121.99 and 135,667.53
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Solution
The fourth proportional to 285,411.87, 428,121.99 and 135,667.53 is: 203,503.28
Step by Step Solution
- Step 1: Write the proportion equation
285,411.87 : 428,121.99 = 135,667.53 : x - Step 2: Convert to fraction form
285,411.87/428,121.99 = 135,667.53/x - Step 3: Cross multiply
285,411.87x = 428,121.99 × 135,667.53 - Step 4: Simplify right side
285,411.87x = 58,082,252,921.98 - Step 5: Solve for x
x = 58,082,252,921.98/285,411.87 - Step 6: Final answer
x = 203,503.28
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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.