Finding the Fourth Proportional to 339,939.80, 509,909.70 and 286,795.70
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Solution
The fourth proportional to 339,939.80, 509,909.70 and 286,795.70 is: 430,193.55
Step by Step Solution
- Step 1: Write the proportion equation
339,939.80 : 509,909.70 = 286,795.70 : x - Step 2: Convert to fraction form
339,939.80/509,909.70 = 286,795.70/x - Step 3: Cross multiply
339,939.80x = 509,909.70 × 286,795.70 - Step 4: Simplify right side
339,939.80x = 146,239,909,348.29 - Step 5: Solve for x
x = 146,239,909,348.29/339,939.80 - Step 6: Final answer
x = 430,193.55
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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.