Finding the Fourth Proportional to 306,392,272.80, 422,820,760.68 and 167,163,128.88
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Solution
The fourth proportional to 306,392,272.80, 422,820,760.68 and 167,163,128.88 is: 230,684,803.72
Step by Step Solution
- Step 1: Write the proportion equation
306,392,272.80 : 422,820,760.68 = 167,163,128.88 : x - Step 2: Convert to fraction form
306,392,272.80/422,820,760.68 = 167,163,128.88/x - Step 3: Cross multiply
306,392,272.80x = 422,820,760.68 × 167,163,128.88 - Step 4: Simplify right side
306,392,272.80x = 70,680,041,310,690,472 - Step 5: Solve for x
x = 70,680,041,310,690,472/306,392,272.80 - Step 6: Final answer
x = 230,684,803.72
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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.