Finding the Fourth Proportional to 396,681.68, 547,421.64 and 217,845.20
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Solution
The fourth proportional to 396,681.68, 547,421.64 and 217,845.20 is: 300,626.88
Step by Step Solution
- Step 1: Write the proportion equation
396,681.68 : 547,421.64 = 217,845.20 : x - Step 2: Convert to fraction form
396,681.68/547,421.64 = 217,845.20/x - Step 3: Cross multiply
396,681.68x = 547,421.64 × 217,845.20 - Step 4: Simplify right side
396,681.68x = 119,253,176,650.13 - Step 5: Solve for x
x = 119,253,176,650.13/396,681.68 - Step 6: Final answer
x = 300,626.88
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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.