Finding the Fourth Proportional to 265,784,080.80, 398,676,121.20 and 163,215,530.40
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Solution
The fourth proportional to 265,784,080.80, 398,676,121.20 and 163,215,530.40 is: 244,823,295.60
Step by Step Solution
- Step 1: Write the proportion equation
265,784,080.80 : 398,676,121.20 = 163,215,530.40 : x - Step 2: Convert to fraction form
265,784,080.80/398,676,121.20 = 163,215,530.40/x - Step 3: Cross multiply
265,784,080.80x = 398,676,121.20 × 163,215,530.40 - Step 4: Simplify right side
265,784,080.80x = 65,070,134,579,472,688 - Step 5: Solve for x
x = 65,070,134,579,472,688/265,784,080.80 - Step 6: Final answer
x = 244,823,295.60
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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.