Finding the Fourth Proportional to 239,221.20, 358,880.40 and 81,465.60
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Solution
The fourth proportional to 239,221.20, 358,880.40 and 81,465.60 is: 122,214.95
Step by Step Solution
- Step 1: Write the proportion equation
239,221.20 : 358,880.40 = 81,465.60 : x - Step 2: Convert to fraction form
239,221.20/358,880.40 = 81,465.60/x - Step 3: Cross multiply
239,221.20x = 358,880.40 × 81,465.60 - Step 4: Simplify right side
239,221.20x = 29,236,407,114.24 - Step 5: Solve for x
x = 29,236,407,114.24/239,221.20 - Step 6: Final answer
x = 122,214.95
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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.