Finding the Fourth Proportional to 287,842.88, 431,660.64 and 121,643.84
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Solution
The fourth proportional to 287,842.88, 431,660.64 and 121,643.84 is: 182,421.94
Step by Step Solution
- Step 1: Write the proportion equation
287,842.88 : 431,660.64 = 121,643.84 : x - Step 2: Convert to fraction form
287,842.88/431,660.64 = 121,643.84/x - Step 3: Cross multiply
287,842.88x = 431,660.64 × 121,643.84 - Step 4: Simplify right side
287,842.88x = 52,508,857,826.46 - Step 5: Solve for x
x = 52,508,857,826.46/287,842.88 - Step 6: Final answer
x = 182,421.94
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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.