Finding the Fourth Proportional to 236,815.60, 355,207.20 and 76,889.20
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Solution
The fourth proportional to 236,815.60, 355,207.20 and 76,889.20 is: 115,328.54
Step by Step Solution
- Step 1: Write the proportion equation
236,815.60 : 355,207.20 = 76,889.20 : x - Step 2: Convert to fraction form
236,815.60/355,207.20 = 76,889.20/x - Step 3: Cross multiply
236,815.60x = 355,207.20 × 76,889.20 - Step 4: Simplify right side
236,815.60x = 27,311,597,442.24 - Step 5: Solve for x
x = 27,311,597,442.24/236,815.60 - Step 6: Final answer
x = 115,328.54
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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.