Finding the Fourth Proportional to 439,638.21, 606,704.81 and 258,354.09
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Solution
The fourth proportional to 439,638.21, 606,704.81 and 258,354.09 is: 356,531.04
Step by Step Solution
- Step 1: Write the proportion equation
439,638.21 : 606,704.81 = 258,354.09 : x - Step 2: Convert to fraction form
439,638.21/606,704.81 = 258,354.09/x - Step 3: Cross multiply
439,638.21x = 606,704.81 × 258,354.09 - Step 4: Simplify right side
439,638.21x = 156,744,667,794.40 - Step 5: Solve for x
x = 156,744,667,794.40/439,638.21 - Step 6: Final answer
x = 356,531.04
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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.