Finding the Fourth Proportional to 426,986.19, 639,986.18 and 160,576.65
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Solution
The fourth proportional to 426,986.19, 639,986.18 and 160,576.65 is: 240,679.53
Step by Step Solution
- Step 1: Write the proportion equation
426,986.19 : 639,986.18 = 160,576.65 : x - Step 2: Convert to fraction form
426,986.19/639,986.18 = 160,576.65/x - Step 3: Cross multiply
426,986.19x = 639,986.18 × 160,576.65 - Step 4: Simplify right side
426,986.19x = 102,766,836,027.81 - Step 5: Solve for x
x = 102,766,836,027.81/426,986.19 - Step 6: Final answer
x = 240,679.53
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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.