Finding the Fourth Proportional to 285,079,345.98, 393,409,497.42 and 154,699,153.98
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Solution
The fourth proportional to 285,079,345.98, 393,409,497.42 and 154,699,153.98 is: 213,484,832.47
Step by Step Solution
- Step 1: Write the proportion equation
285,079,345.98 : 393,409,497.42 = 154,699,153.98 : x - Step 2: Convert to fraction form
285,079,345.98/393,409,497.42 = 154,699,153.98/x - Step 3: Cross multiply
285,079,345.98x = 393,409,497.42 × 154,699,153.98 - Step 4: Simplify right side
285,079,345.98x = 60,860,116,418,570,992 - Step 5: Solve for x
x = 60,860,116,418,570,992/285,079,345.98 - Step 6: Final answer
x = 213,484,832.47
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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.