Finding the Fourth Proportional to 285,079,315.80, 393,409,455.84 and 154,699,123.80
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Solution
The fourth proportional to 285,079,315.80, 393,409,455.84 and 154,699,123.80 is: 213,484,790.86
Step by Step Solution
- Step 1: Write the proportion equation
285,079,315.80 : 393,409,455.84 = 154,699,123.80 : x - Step 2: Convert to fraction form
285,079,315.80/393,409,455.84 = 154,699,123.80/x - Step 3: Cross multiply
285,079,315.80x = 393,409,455.84 × 154,699,123.80 - Step 4: Simplify right side
285,079,315.80x = 60,860,098,113,082,792 - Step 5: Solve for x
x = 60,860,098,113,082,792/285,079,315.80 - Step 6: Final answer
x = 213,484,790.86
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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.