Finding the Fourth Proportional to 391,059.96, 539,662.71 and 212,211.96
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Solution
The fourth proportional to 391,059.96, 539,662.71 and 212,211.96 is: 292,852.49
Step by Step Solution
- Step 1: Write the proportion equation
391,059.96 : 539,662.71 = 212,211.96 : x - Step 2: Convert to fraction form
391,059.96/539,662.71 = 212,211.96/x - Step 3: Cross multiply
391,059.96x = 539,662.71 × 212,211.96 - Step 4: Simplify right side
391,059.96x = 114,522,881,428.01 - Step 5: Solve for x
x = 114,522,881,428.01/391,059.96 - Step 6: Final answer
x = 292,852.49
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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.