Finding the Fourth Proportional to 222,492,842.64, 307,018,000.08 and 128,437,290.99
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Solution
The fourth proportional to 222,492,842.64, 307,018,000.08 and 128,437,290.99 is: 177,230,690.87
Step by Step Solution
- Step 1: Write the proportion equation
222,492,842.64 : 307,018,000.08 = 128,437,290.99 : x - Step 2: Convert to fraction form
222,492,842.64/307,018,000.08 = 128,437,290.99/x - Step 3: Cross multiply
222,492,842.64x = 307,018,000.08 × 128,437,290.99 - Step 4: Simplify right side
222,492,842.64x = 39,432,560,215,442,800 - Step 5: Solve for x
x = 39,432,560,215,442,800/222,492,842.64 - Step 6: Final answer
x = 177,230,690.87
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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.