Finding the Fourth Proportional to 318,984.81, 440,197.71 and 173,790.20
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Solution
The fourth proportional to 318,984.81, 440,197.71 and 173,790.20 is: 239,829.75
Step by Step Solution
- Step 1: Write the proportion equation
318,984.81 : 440,197.71 = 173,790.20 : x - Step 2: Convert to fraction form
318,984.81/440,197.71 = 173,790.20/x - Step 3: Cross multiply
318,984.81x = 440,197.71 × 173,790.20 - Step 4: Simplify right side
318,984.81x = 76,502,045,859.45 - Step 5: Solve for x
x = 76,502,045,859.45/318,984.81 - Step 6: Final answer
x = 239,829.75
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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.