Finding the Fourth Proportional to 345,374.99, 518,415.84 and 285,211.83
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Solution
The fourth proportional to 345,374.99, 518,415.84 and 285,211.83 is: 428,109.55
Step by Step Solution
- Step 1: Write the proportion equation
345,374.99 : 518,415.84 = 285,211.83 : x - Step 2: Convert to fraction form
345,374.99/518,415.84 = 285,211.83/x - Step 3: Cross multiply
345,374.99x = 518,415.84 × 285,211.83 - Step 4: Simplify right side
345,374.99x = 147,858,330,427.39 - Step 5: Solve for x
x = 147,858,330,427.39/345,374.99 - Step 6: Final answer
x = 428,109.55
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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.