Finding the Fourth Proportional to 287,539.10, 431,359.86 and 97,988.96
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Solution
The fourth proportional to 287,539.10, 431,359.86 and 97,988.96 is: 147,000.89
Step by Step Solution
- Step 1: Write the proportion equation
287,539.10 : 431,359.86 = 97,988.96 : x - Step 2: Convert to fraction form
287,539.10/431,359.86 = 97,988.96/x - Step 3: Cross multiply
287,539.10x = 431,359.86 × 97,988.96 - Step 4: Simplify right side
287,539.10x = 42,268,504,067.15 - Step 5: Solve for x
x = 42,268,504,067.15/287,539.10 - Step 6: Final answer
x = 147,000.89
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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.