Finding the Fourth Proportional to 285,331.50, 427,996.26 and 85,651.08
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Solution
The fourth proportional to 285,331.50, 427,996.26 and 85,651.08 is: 128,476.32
Step by Step Solution
- Step 1: Write the proportion equation
285,331.50 : 427,996.26 = 85,651.08 : x - Step 2: Convert to fraction form
285,331.50/427,996.26 = 85,651.08/x - Step 3: Cross multiply
285,331.50x = 427,996.26 × 85,651.08 - Step 4: Simplify right side
285,331.50x = 36,658,341,904.96 - Step 5: Solve for x
x = 36,658,341,904.96/285,331.50 - Step 6: Final answer
x = 128,476.32
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Similar ratio
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1.5x scale
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.