Finding the Fourth Proportional to 207,657,354.20, 311,486,031.30 and 86,473,059.80
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Solution
The fourth proportional to 207,657,354.20, 311,486,031.30 and 86,473,059.80 is: 129,709,589.70
Step by Step Solution
- Step 1: Write the proportion equation
207,657,354.20 : 311,486,031.30 = 86,473,059.80 : x - Step 2: Convert to fraction form
207,657,354.20/311,486,031.30 = 86,473,059.80/x - Step 3: Cross multiply
207,657,354.20x = 311,486,031.30 × 86,473,059.80 - Step 4: Simplify right side
207,657,354.20x = 26,935,150,211,469,572 - Step 5: Solve for x
x = 26,935,150,211,469,572/207,657,354.20 - Step 6: Final answer
x = 129,709,589.70
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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.