Finding the Fourth Proportional to 218,886.14, 328,356.09 and 74,815.79
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Solution
The fourth proportional to 218,886.14, 328,356.09 and 74,815.79 is: 112,232.88
Step by Step Solution
- Step 1: Write the proportion equation
218,886.14 : 328,356.09 = 74,815.79 : x - Step 2: Convert to fraction form
218,886.14/328,356.09 = 74,815.79/x - Step 3: Cross multiply
218,886.14x = 328,356.09 × 74,815.79 - Step 4: Simplify right side
218,886.14x = 24,566,221,095.55 - Step 5: Solve for x
x = 24,566,221,095.55/218,886.14 - Step 6: Final answer
x = 112,232.88
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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.