Finding the Fourth Proportional to 660,687.14, 991,178.40 and 211,434.96
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Solution
The fourth proportional to 660,687.14, 991,178.40 and 211,434.96 is: 317,199.70
Step by Step Solution
- Step 1: Write the proportion equation
660,687.14 : 991,178.40 = 211,434.96 : x - Step 2: Convert to fraction form
660,687.14/991,178.40 = 211,434.96/x - Step 3: Cross multiply
660,687.14x = 991,178.40 × 211,434.96 - Step 4: Simplify right side
660,687.14x = 209,569,765,356.86 - Step 5: Solve for x
x = 209,569,765,356.86/660,687.14 - Step 6: Final answer
x = 317,199.70
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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.