Finding the Fourth Proportional to 386,704.29, 533,655.56 and 216,942.06
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Solution
The fourth proportional to 386,704.29, 533,655.56 and 216,942.06 is: 299,382.08
Step by Step Solution
- Step 1: Write the proportion equation
386,704.29 : 533,655.56 = 216,942.06 : x - Step 2: Convert to fraction form
386,704.29/533,655.56 = 216,942.06/x - Step 3: Cross multiply
386,704.29x = 533,655.56 × 216,942.06 - Step 4: Simplify right side
386,704.29x = 115,772,336,516.85 - Step 5: Solve for x
x = 115,772,336,516.85/386,704.29 - Step 6: Final answer
x = 299,382.08
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.