Finding the Fourth Proportional to 339,808.68, 509,704.74 and 139,990.68
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Solution
The fourth proportional to 339,808.68, 509,704.74 and 139,990.68 is: 209,982.61
Step by Step Solution
- Step 1: Write the proportion equation
339,808.68 : 509,704.74 = 139,990.68 : x - Step 2: Convert to fraction form
339,808.68/509,704.74 = 139,990.68/x - Step 3: Cross multiply
339,808.68x = 509,704.74 × 139,990.68 - Step 4: Simplify right side
339,808.68x = 71,353,913,151.82 - Step 5: Solve for x
x = 71,353,913,151.82/339,808.68 - Step 6: Final answer
x = 209,982.61
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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.