Finding the Fourth Proportional to 287,585.60, 431,374.35 and 129,813.80
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Solution
The fourth proportional to 287,585.60, 431,374.35 and 129,813.80 is: 194,718.87
Step by Step Solution
- Step 1: Write the proportion equation
287,585.60 : 431,374.35 = 129,813.80 : x - Step 2: Convert to fraction form
287,585.60/431,374.35 = 129,813.80/x - Step 3: Cross multiply
287,585.60x = 431,374.35 × 129,813.80 - Step 4: Simplify right side
287,585.60x = 55,998,343,596.03 - Step 5: Solve for x
x = 55,998,343,596.03/287,585.60 - Step 6: Final answer
x = 194,718.87
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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.