Finding the Fourth Proportional to 287,177.36, 430,765.88 and 76,809.83
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Solution
The fourth proportional to 287,177.36, 430,765.88 and 76,809.83 is: 115,214.70
Step by Step Solution
- Step 1: Write the proportion equation
287,177.36 : 430,765.88 = 76,809.83 : x - Step 2: Convert to fraction form
287,177.36/430,765.88 = 76,809.83/x - Step 3: Cross multiply
287,177.36x = 430,765.88 × 76,809.83 - Step 4: Simplify right side
287,177.36x = 33,087,051,474.72 - Step 5: Solve for x
x = 33,087,051,474.72/287,177.36 - Step 6: Final answer
x = 115,214.70
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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.