Finding the Fourth Proportional to 280,274.21, 386,786.63 and 152,957.99
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Solution
The fourth proportional to 280,274.21, 386,786.63 and 152,957.99 is: 211,086.51
Step by Step Solution
- Step 1: Write the proportion equation
280,274.21 : 386,786.63 = 152,957.99 : x - Step 2: Convert to fraction form
280,274.21/386,786.63 = 152,957.99/x - Step 3: Cross multiply
280,274.21x = 386,786.63 × 152,957.99 - Step 4: Simplify right side
280,274.21x = 59,162,105,483.67 - Step 5: Solve for x
x = 59,162,105,483.67/280,274.21 - Step 6: Final answer
x = 211,086.51
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.