Finding the Fourth Proportional to 285,257.84, 427,861.26 and 85,622.80
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Solution
The fourth proportional to 285,257.84, 427,861.26 and 85,622.80 is: 128,426.55
Step by Step Solution
- Step 1: Write the proportion equation
285,257.84 : 427,861.26 = 85,622.80 : x - Step 2: Convert to fraction form
285,257.84/427,861.26 = 85,622.80/x - Step 3: Cross multiply
285,257.84x = 427,861.26 × 85,622.80 - Step 4: Simplify right side
285,257.84x = 36,634,679,092.73 - Step 5: Solve for x
x = 36,634,679,092.73/285,257.84 - Step 6: Final answer
x = 128,426.55
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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.