Finding the Fourth Proportional to 261,412.10, 392,110.05 and 74,423.60
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Solution
The fourth proportional to 261,412.10, 392,110.05 and 74,423.60 is: 111,633.09
Step by Step Solution
- Step 1: Write the proportion equation
261,412.10 : 392,110.05 = 74,423.60 : x - Step 2: Convert to fraction form
261,412.10/392,110.05 = 74,423.60/x - Step 3: Cross multiply
261,412.10x = 392,110.05 × 74,423.60 - Step 4: Simplify right side
261,412.10x = 29,182,241,517.18 - Step 5: Solve for x
x = 29,182,241,517.18/261,412.10 - Step 6: Final answer
x = 111,633.09
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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.