Finding the Fourth Proportional to 422,995.62, 634,537.18 and 142,534.74
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Solution
The fourth proportional to 422,995.62, 634,537.18 and 142,534.74 is: 213,816.85
Step by Step Solution
- Step 1: Write the proportion equation
422,995.62 : 634,537.18 = 142,534.74 : x - Step 2: Convert to fraction form
422,995.62/634,537.18 = 142,534.74/x - Step 3: Cross multiply
422,995.62x = 634,537.18 × 142,534.74 - Step 4: Simplify right side
422,995.62x = 90,443,591,971.63 - Step 5: Solve for x
x = 90,443,591,971.63/422,995.62 - Step 6: Final answer
x = 213,816.85
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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.