Finding the Fourth Proportional to 286,732.20, 395,688.06 and 159,406.68
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Solution
The fourth proportional to 286,732.20, 395,688.06 and 159,406.68 is: 219,979.90
Step by Step Solution
- Step 1: Write the proportion equation
286,732.20 : 395,688.06 = 159,406.68 : x - Step 2: Convert to fraction form
286,732.20/395,688.06 = 159,406.68/x - Step 3: Cross multiply
286,732.20x = 395,688.06 × 159,406.68 - Step 4: Simplify right side
286,732.20x = 63,075,319,960.24 - Step 5: Solve for x
x = 63,075,319,960.24/286,732.20 - Step 6: Final answer
x = 219,979.90
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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.