Finding the Fourth Proportional to 220,915,857.24, 331,373,772.21 and 209,869,265.58
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Solution
The fourth proportional to 220,915,857.24, 331,373,772.21 and 209,869,265.58 is: 314,803,885.40
Step by Step Solution
- Step 1: Write the proportion equation
220,915,857.24 : 331,373,772.21 = 209,869,265.58 : x - Step 2: Convert to fraction form
220,915,857.24/331,373,772.21 = 209,869,265.58/x - Step 3: Cross multiply
220,915,857.24x = 331,373,772.21 × 209,869,265.58 - Step 4: Simplify right side
220,915,857.24x = 69,545,170,206,186,912 - Step 5: Solve for x
x = 69,545,170,206,186,912/220,915,857.24 - Step 6: Final answer
x = 314,803,885.40
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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.