Finding the Fourth Proportional to 420,914.70, 631,367.73 and 243,308.70
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Solution
The fourth proportional to 420,914.70, 631,367.73 and 243,308.70 is: 364,960.55
Step by Step Solution
- Step 1: Write the proportion equation
420,914.70 : 631,367.73 = 243,308.70 : x - Step 2: Convert to fraction form
420,914.70/631,367.73 = 243,308.70/x - Step 3: Cross multiply
420,914.70x = 631,367.73 × 243,308.70 - Step 4: Simplify right side
420,914.70x = 153,617,261,608.25 - Step 5: Solve for x
x = 153,617,261,608.25/420,914.70 - Step 6: Final answer
x = 364,960.55
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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.