Finding the Fourth Proportional to 396,998.14, 547,860.78 and 215,710.08
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Solution
The fourth proportional to 396,998.14, 547,860.78 and 215,710.08 is: 297,681.72
Step by Step Solution
- Step 1: Write the proportion equation
396,998.14 : 547,860.78 = 215,710.08 : x - Step 2: Convert to fraction form
396,998.14/547,860.78 = 215,710.08/x - Step 3: Cross multiply
396,998.14x = 547,860.78 × 215,710.08 - Step 4: Simplify right side
396,998.14x = 118,179,089,404.08 - Step 5: Solve for x
x = 118,179,089,404.08/396,998.14 - Step 6: Final answer
x = 297,681.72
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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.