Finding the Fourth Proportional to 290,232.42, 399,805.74 and 247,072.77
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Solution
The fourth proportional to 290,232.42, 399,805.74 and 247,072.77 is: 340,351.75
Step by Step Solution
- Step 1: Write the proportion equation
290,232.42 : 399,805.74 = 247,072.77 : x - Step 2: Convert to fraction form
290,232.42/399,805.74 = 247,072.77/x - Step 3: Cross multiply
290,232.42x = 399,805.74 × 247,072.77 - Step 4: Simplify right side
290,232.42x = 98,781,111,643.70 - Step 5: Solve for x
x = 98,781,111,643.70/290,232.42 - Step 6: Final answer
x = 340,351.75
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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.