Finding the Fourth Proportional to 415,459.31, 623,272.80 and 131,194.26
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Solution
The fourth proportional to 415,459.31, 623,272.80 and 131,194.26 is: 196,817.87
Step by Step Solution
- Step 1: Write the proportion equation
415,459.31 : 623,272.80 = 131,194.26 : x - Step 2: Convert to fraction form
415,459.31/623,272.80 = 131,194.26/x - Step 3: Cross multiply
415,459.31x = 623,272.80 × 131,194.26 - Step 4: Simplify right side
415,459.31x = 81,769,813,774.13 - Step 5: Solve for x
x = 81,769,813,774.13/415,459.31 - Step 6: Final answer
x = 196,817.87
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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.