Finding the Fourth Proportional to 303,937.20, 455,905.80 and 135,457.20
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Solution
The fourth proportional to 303,937.20, 455,905.80 and 135,457.20 is: 203,185.80
Step by Step Solution
- Step 1: Write the proportion equation
303,937.20 : 455,905.80 = 135,457.20 : x - Step 2: Convert to fraction form
303,937.20/455,905.80 = 135,457.20/x - Step 3: Cross multiply
303,937.20x = 455,905.80 × 135,457.20 - Step 4: Simplify right side
303,937.20x = 61,755,723,131.76 - Step 5: Solve for x
x = 61,755,723,131.76/303,937.20 - Step 6: Final answer
x = 203,185.80
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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.