Finding the Fourth Proportional to 258,339.20, 387,537.06 and 87,684.14
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Solution
The fourth proportional to 258,339.20, 387,537.06 and 87,684.14 is: 131,535.80
Step by Step Solution
- Step 1: Write the proportion equation
258,339.20 : 387,537.06 = 87,684.14 : x - Step 2: Convert to fraction form
258,339.20/387,537.06 = 87,684.14/x - Step 3: Cross multiply
258,339.20x = 387,537.06 × 87,684.14 - Step 4: Simplify right side
258,339.20x = 33,980,853,824.23 - Step 5: Solve for x
x = 33,980,853,824.23/258,339.20 - Step 6: Final answer
x = 131,535.80
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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.