Finding the Fourth Proportional to 287,785.98, 431,718.39 and 98,195.49
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Solution
The fourth proportional to 287,785.98, 431,718.39 and 98,195.49 is: 147,306.69
Step by Step Solution
- Step 1: Write the proportion equation
287,785.98 : 431,718.39 = 98,195.49 : x - Step 2: Convert to fraction form
287,785.98/431,718.39 = 98,195.49/x - Step 3: Cross multiply
287,785.98x = 431,718.39 × 98,195.49 - Step 4: Simplify right side
287,785.98x = 42,392,798,848.06 - Step 5: Solve for x
x = 42,392,798,848.06/287,785.98 - Step 6: Final answer
x = 147,306.69
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1.5x scale
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.