Finding the Fourth Proportional to 421,970.79, 582,325.20 and 230,980.08
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Solution
The fourth proportional to 421,970.79, 582,325.20 and 230,980.08 is: 318,755.53
Step by Step Solution
- Step 1: Write the proportion equation
421,970.79 : 582,325.20 = 230,980.08 : x - Step 2: Convert to fraction form
421,970.79/582,325.20 = 230,980.08/x - Step 3: Cross multiply
421,970.79x = 582,325.20 × 230,980.08 - Step 4: Simplify right side
421,970.79x = 134,505,521,282.02 - Step 5: Solve for x
x = 134,505,521,282.02/421,970.79 - Step 6: Final answer
x = 318,755.53
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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.