Finding the Fourth Proportional to 405,823.24, 608,817.87 and 139,549.15
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Solution
The fourth proportional to 405,823.24, 608,817.87 and 139,549.15 is: 209,352.27
Step by Step Solution
- Step 1: Write the proportion equation
405,823.24 : 608,817.87 = 139,549.15 : x - Step 2: Convert to fraction form
405,823.24/608,817.87 = 139,549.15/x - Step 3: Cross multiply
405,823.24x = 608,817.87 × 139,549.15 - Step 4: Simplify right side
405,823.24x = 84,960,016,263.31 - Step 5: Solve for x
x = 84,960,016,263.31/405,823.24 - Step 6: Final answer
x = 209,352.27
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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.