Finding the Fourth Proportional to 426,622.19, 639,863.23 and 142,314.92
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Solution
The fourth proportional to 426,622.19, 639,863.23 and 142,314.92 is: 213,449.02
Step by Step Solution
- Step 1: Write the proportion equation
426,622.19 : 639,863.23 = 142,314.92 : x - Step 2: Convert to fraction form
426,622.19/639,863.23 = 142,314.92/x - Step 3: Cross multiply
426,622.19x = 639,863.23 × 142,314.92 - Step 4: Simplify right side
426,622.19x = 91,062,087,699.23 - Step 5: Solve for x
x = 91,062,087,699.23/426,622.19 - Step 6: Final answer
x = 213,449.02
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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.