Finding the Fourth Proportional to 221,153.50, 331,730.16 and 71,415.82
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Solution
The fourth proportional to 221,153.50, 331,730.16 and 71,415.82 is: 107,123.70
Step by Step Solution
- Step 1: Write the proportion equation
221,153.50 : 331,730.16 = 71,415.82 : x - Step 2: Convert to fraction form
221,153.50/331,730.16 = 71,415.82/x - Step 3: Cross multiply
221,153.50x = 331,730.16 × 71,415.82 - Step 4: Simplify right side
221,153.50x = 23,690,781,395.13 - Step 5: Solve for x
x = 23,690,781,395.13/221,153.50 - Step 6: Final answer
x = 107,123.70
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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.