Finding the Fourth Proportional to 385,235.31, 531,595.84 and 215,436.63
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Solution
The fourth proportional to 385,235.31, 531,595.84 and 215,436.63 is: 297,286.39
Step by Step Solution
- Step 1: Write the proportion equation
385,235.31 : 531,595.84 = 215,436.63 : x - Step 2: Convert to fraction form
385,235.31/531,595.84 = 215,436.63/x - Step 3: Cross multiply
385,235.31x = 531,595.84 × 215,436.63 - Step 4: Simplify right side
385,235.31x = 114,525,216,291.62 - Step 5: Solve for x
x = 114,525,216,291.62/385,235.31 - Step 6: Final answer
x = 297,286.39
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.