Finding the Fourth Proportional to 218,930.72, 328,394.14 and 69,171.02
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Solution
The fourth proportional to 218,930.72, 328,394.14 and 69,171.02 is: 103,755.92
Step by Step Solution
- Step 1: Write the proportion equation
218,930.72 : 328,394.14 = 69,171.02 : x - Step 2: Convert to fraction form
218,930.72/328,394.14 = 69,171.02/x - Step 3: Cross multiply
218,930.72x = 328,394.14 × 69,171.02 - Step 4: Simplify right side
218,930.72x = 22,715,357,625.82 - Step 5: Solve for x
x = 22,715,357,625.82/218,930.72 - Step 6: Final answer
x = 103,755.92
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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.