Finding the Fourth Proportional to 402,857.70, 604,286.55 and 192,905.70
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Solution
The fourth proportional to 402,857.70, 604,286.55 and 192,905.70 is: 289,358.55
Step by Step Solution
- Step 1: Write the proportion equation
402,857.70 : 604,286.55 = 192,905.70 : x - Step 2: Convert to fraction form
402,857.70/604,286.55 = 192,905.70/x - Step 3: Cross multiply
402,857.70x = 604,286.55 × 192,905.70 - Step 4: Simplify right side
402,857.70x = 116,570,319,928.34 - Step 5: Solve for x
x = 116,570,319,928.34/402,857.70 - Step 6: Final answer
x = 289,358.55
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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.