Finding the Fourth Proportional to 221,290.56, 331,639.36 and 207,118.80
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Solution
The fourth proportional to 221,290.56, 331,639.36 and 207,118.80 is: 310,400.70
Step by Step Solution
- Step 1: Write the proportion equation
221,290.56 : 331,639.36 = 207,118.80 : x - Step 2: Convert to fraction form
221,290.56/331,639.36 = 207,118.80/x - Step 3: Cross multiply
221,290.56x = 331,639.36 × 207,118.80 - Step 4: Simplify right side
221,290.56x = 68,688,745,758.17 - Step 5: Solve for x
x = 68,688,745,758.17/221,290.56 - Step 6: Final answer
x = 310,400.70
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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.