Finding the Fourth Proportional to 387,940.08, 581,910.12 and 121,721.88
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Solution
The fourth proportional to 387,940.08, 581,910.12 and 121,721.88 is: 182,582.82
Step by Step Solution
- Step 1: Write the proportion equation
387,940.08 : 581,910.12 = 121,721.88 : x - Step 2: Convert to fraction form
387,940.08/581,910.12 = 121,721.88/x - Step 3: Cross multiply
387,940.08x = 581,910.12 × 121,721.88 - Step 4: Simplify right side
387,940.08x = 70,831,193,797.43 - Step 5: Solve for x
x = 70,831,193,797.43/387,940.08 - Step 6: Final answer
x = 182,582.82
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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.