Finding the Fourth Proportional to 318,645.74, 439,741.02 and 173,461.18
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Solution
The fourth proportional to 318,645.74, 439,741.02 and 173,461.18 is: 239,381.82
Step by Step Solution
- Step 1: Write the proportion equation
318,645.74 : 439,741.02 = 173,461.18 : x - Step 2: Convert to fraction form
318,645.74/439,741.02 = 173,461.18/x - Step 3: Cross multiply
318,645.74x = 439,741.02 × 173,461.18 - Step 4: Simplify right side
318,645.74x = 76,277,996,223.60 - Step 5: Solve for x
x = 76,277,996,223.60/318,645.74 - Step 6: Final answer
x = 239,381.82
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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.