Finding the Fourth Proportional to 382,987.97, 528,443.28 and 221,833.41
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Solution
The fourth proportional to 382,987.97, 528,443.28 and 221,833.41 is: 306,083.70
Step by Step Solution
- Step 1: Write the proportion equation
382,987.97 : 528,443.28 = 221,833.41 : x - Step 2: Convert to fraction form
382,987.97/528,443.28 = 221,833.41/x - Step 3: Cross multiply
382,987.97x = 528,443.28 × 221,833.41 - Step 4: Simplify right side
382,987.97x = 117,226,374,793.99 - Step 5: Solve for x
x = 117,226,374,793.99/382,987.97 - Step 6: Final answer
x = 306,083.70
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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.