Finding the Fourth Proportional to 385,257.19, 531,656.84 and 215,491.31
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Solution
The fourth proportional to 385,257.19, 531,656.84 and 215,491.31 is: 297,379.09
Step by Step Solution
- Step 1: Write the proportion equation
385,257.19 : 531,656.84 = 215,491.31 : x - Step 2: Convert to fraction form
385,257.19/531,656.84 = 215,491.31/x - Step 3: Cross multiply
385,257.19x = 531,656.84 × 215,491.31 - Step 4: Simplify right side
385,257.19x = 114,567,430,789.93 - Step 5: Solve for x
x = 114,567,430,789.93/385,257.19 - Step 6: Final answer
x = 297,379.09
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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.