Finding the Fourth Proportional to 384,899.18, 531,139.33 and 212,807.12
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Solution
The fourth proportional to 384,899.18, 531,139.33 and 212,807.12 is: 293,661.92
Step by Step Solution
- Step 1: Write the proportion equation
384,899.18 : 531,139.33 = 212,807.12 : x - Step 2: Convert to fraction form
384,899.18/531,139.33 = 212,807.12/x - Step 3: Cross multiply
384,899.18x = 531,139.33 × 212,807.12 - Step 4: Simplify right side
384,899.18x = 113,030,231,136.03 - Step 5: Solve for x
x = 113,030,231,136.03/384,899.18 - Step 6: Final answer
x = 293,661.92
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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.