Finding the Fourth Proportional to 343,811.50, 515,716.79 and 130,579.00
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Solution
The fourth proportional to 343,811.50, 515,716.79 and 130,579.00 is: 195,868.32
Step by Step Solution
- Step 1: Write the proportion equation
343,811.50 : 515,716.79 = 130,579.00 : x - Step 2: Convert to fraction form
343,811.50/515,716.79 = 130,579.00/x - Step 3: Cross multiply
343,811.50x = 515,716.79 × 130,579.00 - Step 4: Simplify right side
343,811.50x = 67,341,780,779.22 - Step 5: Solve for x
x = 67,341,780,779.22/343,811.50 - Step 6: Final answer
x = 195,868.32
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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.