Finding the Fourth Proportional to 261,201.84, 391,807.08 and 74,206.32
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Solution
The fourth proportional to 261,201.84, 391,807.08 and 74,206.32 is: 111,310.71
Step by Step Solution
- Step 1: Write the proportion equation
261,201.84 : 391,807.08 = 74,206.32 : x - Step 2: Convert to fraction form
261,201.84/391,807.08 = 74,206.32/x - Step 3: Cross multiply
261,201.84x = 391,807.08 × 74,206.32 - Step 4: Simplify right side
261,201.84x = 29,074,561,556.75 - Step 5: Solve for x
x = 29,074,561,556.75/261,201.84 - Step 6: Final answer
x = 111,310.71
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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.