Finding the Fourth Proportional to 309,898.59, 464,786.68 and 85,201.08
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Solution
The fourth proportional to 309,898.59, 464,786.68 and 85,201.08 is: 127,784.79
Step by Step Solution
- Step 1: Write the proportion equation
309,898.59 : 464,786.68 = 85,201.08 : x - Step 2: Convert to fraction form
309,898.59/464,786.68 = 85,201.08/x - Step 3: Cross multiply
309,898.59x = 464,786.68 × 85,201.08 - Step 4: Simplify right side
309,898.59x = 39,600,327,105.61 - Step 5: Solve for x
x = 39,600,327,105.61/309,898.59 - Step 6: Final answer
x = 127,784.79
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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.