Finding the Fourth Proportional to 258,948.09, 388,423.35 and 90,467.69
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Solution
The fourth proportional to 258,948.09, 388,423.35 and 90,467.69 is: 135,701.95
Step by Step Solution
- Step 1: Write the proportion equation
258,948.09 : 388,423.35 = 90,467.69 : x - Step 2: Convert to fraction form
258,948.09/388,423.35 = 90,467.69/x - Step 3: Cross multiply
258,948.09x = 388,423.35 × 90,467.69 - Step 4: Simplify right side
258,948.09x = 35,139,761,274.44 - Step 5: Solve for x
x = 35,139,761,274.44/258,948.09 - Step 6: Final answer
x = 135,701.95
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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.