Finding the Fourth Proportional to 287,235.19, 430,852.79 and 76,867.66
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Solution
The fourth proportional to 287,235.19, 430,852.79 and 76,867.66 is: 115,301.49
Step by Step Solution
- Step 1: Write the proportion equation
287,235.19 : 430,852.79 = 76,867.66 : x - Step 2: Convert to fraction form
287,235.19/430,852.79 = 76,867.66/x - Step 3: Cross multiply
287,235.19x = 430,852.79 × 76,867.66 - Step 4: Simplify right side
287,235.19x = 33,118,644,310.30 - Step 5: Solve for x
x = 33,118,644,310.30/287,235.19 - Step 6: Final answer
x = 115,301.49
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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.