Finding the Fourth Proportional to 329,861.70, 494,792.55 and 143,237.70
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Solution
The fourth proportional to 329,861.70, 494,792.55 and 143,237.70 is: 214,856.55
Step by Step Solution
- Step 1: Write the proportion equation
329,861.70 : 494,792.55 = 143,237.70 : x - Step 2: Convert to fraction form
329,861.70/494,792.55 = 143,237.70/x - Step 3: Cross multiply
329,861.70x = 494,792.55 × 143,237.70 - Step 4: Simplify right side
329,861.70x = 70,872,946,839.14 - Step 5: Solve for x
x = 70,872,946,839.14/329,861.70 - Step 6: Final answer
x = 214,856.55
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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.