Finding the Fourth Proportional to 287,339.74, 431,077.01 and 87,660.06
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Solution
The fourth proportional to 287,339.74, 431,077.01 and 87,660.06 is: 131,510.65
Step by Step Solution
- Step 1: Write the proportion equation
287,339.74 : 431,077.01 = 87,660.06 : x - Step 2: Convert to fraction form
287,339.74/431,077.01 = 87,660.06/x - Step 3: Cross multiply
287,339.74x = 431,077.01 × 87,660.06 - Step 4: Simplify right side
287,339.74x = 37,788,236,561.22 - Step 5: Solve for x
x = 37,788,236,561.22/287,339.74 - Step 6: Final answer
x = 131,510.65
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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.