Finding the Fourth Proportional to 426,497.04, 639,531.72 and 142,087.68
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Solution
The fourth proportional to 426,497.04, 639,531.72 and 142,087.68 is: 213,060.28
Step by Step Solution
- Step 1: Write the proportion equation
426,497.04 : 639,531.72 = 142,087.68 : x - Step 2: Convert to fraction form
426,497.04/639,531.72 = 142,087.68/x - Step 3: Cross multiply
426,497.04x = 639,531.72 × 142,087.68 - Step 4: Simplify right side
426,497.04x = 90,869,578,381.21 - Step 5: Solve for x
x = 90,869,578,381.21/426,497.04 - Step 6: Final answer
x = 213,060.28
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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.