Finding the Fourth Proportional to 218,916.24, 328,432.84 and 78,676.08
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Solution
The fourth proportional to 218,916.24, 328,432.84 and 78,676.08 is: 118,035.14
Step by Step Solution
- Step 1: Write the proportion equation
218,916.24 : 328,432.84 = 78,676.08 : x - Step 2: Convert to fraction form
218,916.24/328,432.84 = 78,676.08/x - Step 3: Cross multiply
218,916.24x = 328,432.84 × 78,676.08 - Step 4: Simplify right side
218,916.24x = 25,839,808,394.47 - Step 5: Solve for x
x = 25,839,808,394.47/218,916.24 - Step 6: Final answer
x = 118,035.14
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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.