Finding the Fourth Proportional to 218,888.14, 328,359.09 and 74,817.79
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Solution
The fourth proportional to 218,888.14, 328,359.09 and 74,817.79 is: 112,235.87
Step by Step Solution
- Step 1: Write the proportion equation
218,888.14 : 328,359.09 = 74,817.79 : x - Step 2: Convert to fraction form
218,888.14/328,359.09 = 74,817.79/x - Step 3: Cross multiply
218,888.14x = 328,359.09 × 74,817.79 - Step 4: Simplify right side
218,888.14x = 24,567,101,440.21 - Step 5: Solve for x
x = 24,567,101,440.21/218,888.14 - Step 6: Final answer
x = 112,235.87
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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.