Finding the Fourth Proportional to 261,783.12, 392,674.62 and 74,794.62
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Solution
The fourth proportional to 261,783.12, 392,674.62 and 74,794.62 is: 112,191.91
Step by Step Solution
- Step 1: Write the proportion equation
261,783.12 : 392,674.62 = 74,794.62 : x - Step 2: Convert to fraction form
261,783.12/392,674.62 = 74,794.62/x - Step 3: Cross multiply
261,783.12x = 392,674.62 × 74,794.62 - Step 4: Simplify right side
261,783.12x = 29,369,948,986.54 - Step 5: Solve for x
x = 29,369,948,986.54/261,783.12 - Step 6: Final answer
x = 112,191.91
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1.5x scale
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.