Finding the Fourth Proportional to 291,139.86, 436,704.92 and 131,126.79
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Solution
The fourth proportional to 291,139.86, 436,704.92 and 131,126.79 is: 196,687.99
Step by Step Solution
- Step 1: Write the proportion equation
291,139.86 : 436,704.92 = 131,126.79 : x - Step 2: Convert to fraction form
291,139.86/436,704.92 = 131,126.79/x - Step 3: Cross multiply
291,139.86x = 436,704.92 × 131,126.79 - Step 4: Simplify right side
291,139.86x = 57,263,713,681.17 - Step 5: Solve for x
x = 57,263,713,681.17/291,139.86 - Step 6: Final answer
x = 196,687.99
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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.