Finding the Fourth Proportional to 287,647.47, 396,955.35 and 160,331.13
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Solution
The fourth proportional to 287,647.47, 396,955.35 and 160,331.13 is: 221,257.99
Step by Step Solution
- Step 1: Write the proportion equation
287,647.47 : 396,955.35 = 160,331.13 : x - Step 2: Convert to fraction form
287,647.47/396,955.35 = 160,331.13/x - Step 3: Cross multiply
287,647.47x = 396,955.35 × 160,331.13 - Step 4: Simplify right side
287,647.47x = 63,644,299,825.05 - Step 5: Solve for x
x = 63,644,299,825.05/287,647.47 - Step 6: Final answer
x = 221,257.99
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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.