Finding the Fourth Proportional to 393,043.62, 589,690.05 and 140,318.70
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Solution
The fourth proportional to 393,043.62, 589,690.05 and 140,318.70 is: 210,522.53
Step by Step Solution
- Step 1: Write the proportion equation
393,043.62 : 589,690.05 = 140,318.70 : x - Step 2: Convert to fraction form
393,043.62/589,690.05 = 140,318.70/x - Step 3: Cross multiply
393,043.62x = 589,690.05 × 140,318.70 - Step 4: Simplify right side
393,043.62x = 82,744,538,481.40 - Step 5: Solve for x
x = 82,744,538,481.40/393,043.62 - Step 6: Final answer
x = 210,522.53
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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.