Finding the Fourth Proportional to 386,251.20, 579,376.80 and 274,276.80
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Solution
The fourth proportional to 386,251.20, 579,376.80 and 274,276.80 is: 411,415.20
Step by Step Solution
- Step 1: Write the proportion equation
386,251.20 : 579,376.80 = 274,276.80 : x - Step 2: Convert to fraction form
386,251.20/579,376.80 = 274,276.80/x - Step 3: Cross multiply
386,251.20x = 579,376.80 × 274,276.80 - Step 4: Simplify right side
386,251.20x = 158,909,614,698.24 - Step 5: Solve for x
x = 158,909,614,698.24/386,251.20 - Step 6: Final answer
x = 411,415.20
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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.