Finding the Fourth Proportional to 276,715.20, 415,072.80 and 164,740.80
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Solution
The fourth proportional to 276,715.20, 415,072.80 and 164,740.80 is: 247,111.20
Step by Step Solution
- Step 1: Write the proportion equation
276,715.20 : 415,072.80 = 164,740.80 : x - Step 2: Convert to fraction form
276,715.20/415,072.80 = 164,740.80/x - Step 3: Cross multiply
276,715.20x = 415,072.80 × 164,740.80 - Step 4: Simplify right side
276,715.20x = 68,379,425,130.24 - Step 5: Solve for x
x = 68,379,425,130.24/276,715.20 - Step 6: Final answer
x = 247,111.20
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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.