Finding the Fourth Proportional to 165,192,405.80, 247,788,608.70 and 138,318,549.80
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Solution
The fourth proportional to 165,192,405.80, 247,788,608.70 and 138,318,549.80 is: 207,477,824.70
Step by Step Solution
- Step 1: Write the proportion equation
165,192,405.80 : 247,788,608.70 = 138,318,549.80 : x - Step 2: Convert to fraction form
165,192,405.80/247,788,608.70 = 138,318,549.80/x - Step 3: Cross multiply
165,192,405.80x = 247,788,608.70 × 138,318,549.80 - Step 4: Simplify right side
165,192,405.80x = 34,273,761,012,343,664 - Step 5: Solve for x
x = 34,273,761,012,343,664/165,192,405.80 - Step 6: Final answer
x = 207,477,824.70
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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.