Finding the Fourth Proportional to 261,712.68, 392,582.14 and 74,751.72
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Solution
The fourth proportional to 261,712.68, 392,582.14 and 74,751.72 is: 112,131.33
Step by Step Solution
- Step 1: Write the proportion equation
261,712.68 : 392,582.14 = 74,751.72 : x - Step 2: Convert to fraction form
261,712.68/392,582.14 = 74,751.72/x - Step 3: Cross multiply
261,712.68x = 392,582.14 × 74,751.72 - Step 4: Simplify right side
261,712.68x = 29,346,190,206.28 - Step 5: Solve for x
x = 29,346,190,206.28/261,712.68 - Step 6: Final answer
x = 112,131.33
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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.