Finding the Fourth Proportional to 290,283.12, 435,440.88 and 90,631.08
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Solution
The fourth proportional to 290,283.12, 435,440.88 and 90,631.08 is: 135,951.68
Step by Step Solution
- Step 1: Write the proportion equation
290,283.12 : 435,440.88 = 90,631.08 : x - Step 2: Convert to fraction form
290,283.12/435,440.88 = 90,631.08/x - Step 3: Cross multiply
290,283.12x = 435,440.88 × 90,631.08 - Step 4: Simplify right side
290,283.12x = 39,464,477,230.55 - Step 5: Solve for x
x = 39,464,477,230.55/290,283.12 - Step 6: Final answer
x = 135,951.68
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1.5x scale
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.