Finding the Fourth Proportional to 287,148.12, 430,744.05 and 87,485.55
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Solution
The fourth proportional to 287,148.12, 430,744.05 and 87,485.55 is: 131,234.99
Step by Step Solution
- Step 1: Write the proportion equation
287,148.12 : 430,744.05 = 87,485.55 : x - Step 2: Convert to fraction form
287,148.12/430,744.05 = 87,485.55/x - Step 3: Cross multiply
287,148.12x = 430,744.05 × 87,485.55 - Step 4: Simplify right side
287,148.12x = 37,683,880,123.48 - Step 5: Solve for x
x = 37,683,880,123.48/287,148.12 - Step 6: Final answer
x = 131,234.99
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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.