Finding the Fourth Proportional to 261,703.80, 392,555.70 and 74,715.30
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Solution
The fourth proportional to 261,703.80, 392,555.70 and 74,715.30 is: 112,072.95
Step by Step Solution
- Step 1: Write the proportion equation
261,703.80 : 392,555.70 = 74,715.30 : x - Step 2: Convert to fraction form
261,703.80/392,555.70 = 74,715.30/x - Step 3: Cross multiply
261,703.80x = 392,555.70 × 74,715.30 - Step 4: Simplify right side
261,703.80x = 29,329,916,892.21 - Step 5: Solve for x
x = 29,329,916,892.21/261,703.80 - Step 6: Final answer
x = 112,072.95
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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.