Finding the Fourth Proportional to 285,115.42, 427,548.57 and 135,398.62
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Solution
The fourth proportional to 285,115.42, 427,548.57 and 135,398.62 is: 203,038.78
Step by Step Solution
- Step 1: Write the proportion equation
285,115.42 : 427,548.57 = 135,398.62 : x - Step 2: Convert to fraction form
285,115.42/427,548.57 = 135,398.62/x - Step 3: Cross multiply
285,115.42x = 427,548.57 × 135,398.62 - Step 4: Simplify right side
285,115.42x = 57,889,486,360.97 - Step 5: Solve for x
x = 57,889,486,360.97/285,115.42 - Step 6: Final answer
x = 203,038.78
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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.