Finding the Fourth Proportional to 415,957.20, 623,935.80 and 135,474.45
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Solution
The fourth proportional to 415,957.20, 623,935.80 and 135,474.45 is: 203,211.68
Step by Step Solution
- Step 1: Write the proportion equation
415,957.20 : 623,935.80 = 135,474.45 : x - Step 2: Convert to fraction form
415,957.20/623,935.80 = 135,474.45/x - Step 3: Cross multiply
415,957.20x = 623,935.80 × 135,474.45 - Step 4: Simplify right side
415,957.20x = 84,527,359,340.31 - Step 5: Solve for x
x = 84,527,359,340.31/415,957.20 - Step 6: Final answer
x = 203,211.68
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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.