Finding the Fourth Proportional to 285,079,427.28, 393,409,609.71 and 154,699,235.28
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Solution
The fourth proportional to 285,079,427.28, 393,409,609.71 and 154,699,235.28 is: 213,484,944.72
Step by Step Solution
- Step 1: Write the proportion equation
285,079,427.28 : 393,409,609.71 = 154,699,235.28 : x - Step 2: Convert to fraction form
285,079,427.28/393,409,609.71 = 154,699,235.28/x - Step 3: Cross multiply
285,079,427.28x = 393,409,609.71 × 154,699,235.28 - Step 4: Simplify right side
285,079,427.28x = 60,860,165,773,940,256 - Step 5: Solve for x
x = 60,860,165,773,940,256/285,079,427.28 - Step 6: Final answer
x = 213,484,944.72
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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.