Finding the Fourth Proportional to 308,207.80, 462,311.70 and 86,591.80
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Solution
The fourth proportional to 308,207.80, 462,311.70 and 86,591.80 is: 129,887.70
Step by Step Solution
- Step 1: Write the proportion equation
308,207.80 : 462,311.70 = 86,591.80 : x - Step 2: Convert to fraction form
308,207.80/462,311.70 = 86,591.80/x - Step 3: Cross multiply
308,207.80x = 462,311.70 × 86,591.80 - Step 4: Simplify right side
308,207.80x = 40,032,402,264.06 - Step 5: Solve for x
x = 40,032,402,264.06/308,207.80 - Step 6: Final answer
x = 129,887.70
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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.