Finding the Fourth Proportional to 287,193.60, 430,984.80 and 129,340.80
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Solution
The fourth proportional to 287,193.60, 430,984.80 and 129,340.80 is: 194,098.75
Step by Step Solution
- Step 1: Write the proportion equation
287,193.60 : 430,984.80 = 129,340.80 : x - Step 2: Convert to fraction form
287,193.60/430,984.80 = 129,340.80/x - Step 3: Cross multiply
287,193.60x = 430,984.80 × 129,340.80 - Step 4: Simplify right side
287,193.60x = 55,743,918,819.84 - Step 5: Solve for x
x = 55,743,918,819.84/287,193.60 - Step 6: Final answer
x = 194,098.75
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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.