Finding the Fourth Proportional to 318,631.26, 439,722.74 and 173,430.02
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Solution
The fourth proportional to 318,631.26, 439,722.74 and 173,430.02 is: 239,339.73
Step by Step Solution
- Step 1: Write the proportion equation
318,631.26 : 439,722.74 = 173,430.02 : x - Step 2: Convert to fraction form
318,631.26/439,722.74 = 173,430.02/x - Step 3: Cross multiply
318,631.26x = 439,722.74 × 173,430.02 - Step 4: Simplify right side
318,631.26x = 76,261,120,526.89 - Step 5: Solve for x
x = 76,261,120,526.89/318,631.26 - Step 6: Final answer
x = 239,339.73
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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.