Finding the Fourth Proportional to 286,178.12, 394,943.70 and 158,855.84
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Solution
The fourth proportional to 286,178.12, 394,943.70 and 158,855.84 is: 219,230.99
Step by Step Solution
- Step 1: Write the proportion equation
286,178.12 : 394,943.70 = 158,855.84 : x - Step 2: Convert to fraction form
286,178.12/394,943.70 = 158,855.84/x - Step 3: Cross multiply
286,178.12x = 394,943.70 × 158,855.84 - Step 4: Simplify right side
286,178.12x = 62,739,113,216.21 - Step 5: Solve for x
x = 62,739,113,216.21/286,178.12 - Step 6: Final answer
x = 219,230.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.