Finding the Fourth Proportional to 214,352,136.80, 321,528,205.20 and 212,560,546.40
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Solution
The fourth proportional to 214,352,136.80, 321,528,205.20 and 212,560,546.40 is: 318,840,819.60
Step by Step Solution
- Step 1: Write the proportion equation
214,352,136.80 : 321,528,205.20 = 212,560,546.40 : x - Step 2: Convert to fraction form
214,352,136.80/321,528,205.20 = 212,560,546.40/x - Step 3: Cross multiply
214,352,136.80x = 321,528,205.20 × 212,560,546.40 - Step 4: Simplify right side
214,352,136.80x = 68,344,210,980,323,320 - Step 5: Solve for x
x = 68,344,210,980,323,320/214,352,136.80 - Step 6: Final answer
x = 318,840,819.60
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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.