Finding the Fourth Proportional to 391,798.44, 540,103.68 and 305,660.52
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Solution
The fourth proportional to 391,798.44, 540,103.68 and 305,660.52 is: 421,360.46
Step by Step Solution
- Step 1: Write the proportion equation
391,798.44 : 540,103.68 = 305,660.52 : x - Step 2: Convert to fraction form
391,798.44/540,103.68 = 305,660.52/x - Step 3: Cross multiply
391,798.44x = 540,103.68 × 305,660.52 - Step 4: Simplify right side
391,798.44x = 165,088,371,682.71 - Step 5: Solve for x
x = 165,088,371,682.71/391,798.44 - Step 6: Final answer
x = 421,360.46
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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.