Finding the Fourth Proportional to 280,440,001.80, 420,660,002.70 and 212,415,553.80
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Solution
The fourth proportional to 280,440,001.80, 420,660,002.70 and 212,415,553.80 is: 318,623,330.70
Step by Step Solution
- Step 1: Write the proportion equation
280,440,001.80 : 420,660,002.70 = 212,415,553.80 : x - Step 2: Convert to fraction form
280,440,001.80/420,660,002.70 = 212,415,553.80/x - Step 3: Cross multiply
280,440,001.80x = 420,660,002.70 × 212,415,553.80 - Step 4: Simplify right side
280,440,001.80x = 89,354,727,435,030,000 - Step 5: Solve for x
x = 89,354,727,435,030,000/280,440,001.80 - Step 6: Final answer
x = 318,623,330.70
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1.5x scale
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.