Finding the Fourth Proportional to 268,772.99, 403,217.80 and 81,779.63
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Solution
The fourth proportional to 268,772.99, 403,217.80 and 81,779.63 is: 122,687.18
Step by Step Solution
- Step 1: Write the proportion equation
268,772.99 : 403,217.80 = 81,779.63 : x - Step 2: Convert to fraction form
268,772.99/403,217.80 = 81,779.63/x - Step 3: Cross multiply
268,772.99x = 403,217.80 × 81,779.63 - Step 4: Simplify right side
268,772.99x = 32,975,000,272.88 - Step 5: Solve for x
x = 32,975,000,272.88/268,772.99 - Step 6: Final answer
x = 122,687.18
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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.