Finding the Fourth Proportional to 420,725.49, 631,317.84 and 243,578.49
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Solution
The fourth proportional to 420,725.49, 631,317.84 and 243,578.49 is: 365,500.66
Step by Step Solution
- Step 1: Write the proportion equation
420,725.49 : 631,317.84 = 243,578.49 : x - Step 2: Convert to fraction form
420,725.49/631,317.84 = 243,578.49/x - Step 3: Cross multiply
420,725.49x = 631,317.84 × 243,578.49 - Step 4: Simplify right side
420,725.49x = 153,775,446,177.26 - Step 5: Solve for x
x = 153,775,446,177.26/420,725.49 - Step 6: Final answer
x = 365,500.66
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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.