Finding the Fourth Proportional to 168,497,310.40, 252,745,965.60 and 139,775,876.80
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Solution
The fourth proportional to 168,497,310.40, 252,745,965.60 and 139,775,876.80 is: 209,663,815.20
Step by Step Solution
- Step 1: Write the proportion equation
168,497,310.40 : 252,745,965.60 = 139,775,876.80 : x - Step 2: Convert to fraction form
168,497,310.40/252,745,965.60 = 139,775,876.80/x - Step 3: Cross multiply
168,497,310.40x = 252,745,965.60 × 139,775,876.80 - Step 4: Simplify right side
168,497,310.40x = 35,327,788,949,402,640 - Step 5: Solve for x
x = 35,327,788,949,402,640/168,497,310.40 - Step 6: Final answer
x = 209,663,815.20
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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.