Finding the Fourth Proportional to 354,431.74, 489,153.73 and 216,691.49
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Solution
The fourth proportional to 354,431.74, 489,153.73 and 216,691.49 is: 299,057.45
Step by Step Solution
- Step 1: Write the proportion equation
354,431.74 : 489,153.73 = 216,691.49 : x - Step 2: Convert to fraction form
354,431.74/489,153.73 = 216,691.49/x - Step 3: Cross multiply
354,431.74x = 489,153.73 × 216,691.49 - Step 4: Simplify right side
354,431.74x = 105,995,450,592.76 - Step 5: Solve for x
x = 105,995,450,592.76/354,431.74 - Step 6: Final answer
x = 299,057.45
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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.