Finding the Fourth Proportional to 287,239.98, 396,331.08 and 166,374.05
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Solution
The fourth proportional to 287,239.98, 396,331.08 and 166,374.05 is: 229,561.38
Step by Step Solution
- Step 1: Write the proportion equation
287,239.98 : 396,331.08 = 166,374.05 : x - Step 2: Convert to fraction form
287,239.98/396,331.08 = 166,374.05/x - Step 3: Cross multiply
287,239.98x = 396,331.08 × 166,374.05 - Step 4: Simplify right side
287,239.98x = 65,939,206,920.47 - Step 5: Solve for x
x = 65,939,206,920.47/287,239.98 - Step 6: Final answer
x = 229,561.38
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.