Finding the Fourth Proportional to 276,007.80, 414,011.70 and 86,469.75
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Solution
The fourth proportional to 276,007.80, 414,011.70 and 86,469.75 is: 129,704.63
Step by Step Solution
- Step 1: Write the proportion equation
276,007.80 : 414,011.70 = 86,469.75 : x - Step 2: Convert to fraction form
276,007.80/414,011.70 = 86,469.75/x - Step 3: Cross multiply
276,007.80x = 414,011.70 × 86,469.75 - Step 4: Simplify right side
276,007.80x = 35,799,488,196.08 - Step 5: Solve for x
x = 35,799,488,196.08/276,007.80 - Step 6: Final answer
x = 129,704.63
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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.