Finding the Fourth Proportional to 427,129.44, 640,650.36 and 111,545.28
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Solution
The fourth proportional to 427,129.44, 640,650.36 and 111,545.28 is: 167,306.48
Step by Step Solution
- Step 1: Write the proportion equation
427,129.44 : 640,650.36 = 111,545.28 : x - Step 2: Convert to fraction form
427,129.44/640,650.36 = 111,545.28/x - Step 3: Cross multiply
427,129.44x = 640,650.36 × 111,545.28 - Step 4: Simplify right side
427,129.44x = 71,461,523,788.30 - Step 5: Solve for x
x = 71,461,523,788.30/427,129.44 - Step 6: Final answer
x = 167,306.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.