Finding the Fourth Proportional to 217,405.80, 326,141.10 and 77,152.68
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Solution
The fourth proportional to 217,405.80, 326,141.10 and 77,152.68 is: 115,740.52
Step by Step Solution
- Step 1: Write the proportion equation
217,405.80 : 326,141.10 = 77,152.68 : x - Step 2: Convert to fraction form
217,405.80/326,141.10 = 77,152.68/x - Step 3: Cross multiply
217,405.80x = 326,141.10 × 77,152.68 - Step 4: Simplify right side
217,405.80x = 25,162,659,923.15 - Step 5: Solve for x
x = 25,162,659,923.15/217,405.80 - Step 6: Final answer
x = 115,740.52
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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.