Finding the Fourth Proportional to 405,491.41, 608,173.21 and 135,617.50
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Solution
The fourth proportional to 405,491.41, 608,173.21 and 135,617.50 is: 203,404.88
Step by Step Solution
- Step 1: Write the proportion equation
405,491.41 : 608,173.21 = 135,617.50 : x - Step 2: Convert to fraction form
405,491.41/608,173.21 = 135,617.50/x - Step 3: Cross multiply
405,491.41x = 608,173.21 × 135,617.50 - Step 4: Simplify right side
405,491.41x = 82,478,930,307.18 - Step 5: Solve for x
x = 82,478,930,307.18/405,491.41 - Step 6: Final answer
x = 203,404.88
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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.