Finding the Fourth Proportional to 328,987.79, 492,358.85 and 275,739.92
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Solution
The fourth proportional to 328,987.79, 492,358.85 and 275,739.92 is: 412,668.79
Step by Step Solution
- Step 1: Write the proportion equation
328,987.79 : 492,358.85 = 275,739.92 : x - Step 2: Convert to fraction form
328,987.79/492,358.85 = 275,739.92/x - Step 3: Cross multiply
328,987.79x = 492,358.85 × 275,739.92 - Step 4: Simplify right side
328,987.79x = 135,762,991,885.97 - Step 5: Solve for x
x = 135,762,991,885.97/328,987.79 - Step 6: Final answer
x = 412,668.79
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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.