Finding the Fourth Proportional to 305,461,861.85, 421,551,250.40 and 180,019,352.09
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Solution
The fourth proportional to 305,461,861.85, 421,551,250.40 and 180,019,352.09 is: 248,434,886.47
Step by Step Solution
- Step 1: Write the proportion equation
305,461,861.85 : 421,551,250.40 = 180,019,352.09 : x - Step 2: Convert to fraction form
305,461,861.85/421,551,250.40 = 180,019,352.09/x - Step 3: Cross multiply
305,461,861.85x = 421,551,250.40 × 180,019,352.09 - Step 4: Simplify right side
305,461,861.85x = 75,887,382,969,891,136 - Step 5: Solve for x
x = 75,887,382,969,891,136/305,461,861.85 - Step 6: Final answer
x = 248,434,886.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.