Finding the Fourth Proportional to 420,863.21, 581,000.75 and 259,807.07
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Solution
The fourth proportional to 420,863.21, 581,000.75 and 259,807.07 is: 358,663.09
Step by Step Solution
- Step 1: Write the proportion equation
420,863.21 : 581,000.75 = 259,807.07 : x - Step 2: Convert to fraction form
420,863.21/581,000.75 = 259,807.07/x - Step 3: Cross multiply
420,863.21x = 581,000.75 × 259,807.07 - Step 4: Simplify right side
420,863.21x = 150,948,098,321.26 - Step 5: Solve for x
x = 150,948,098,321.26/420,863.21 - Step 6: Final answer
x = 358,663.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.