Finding the Fourth Proportional to 419,963.70, 579,546.99 and 238,661.40
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Solution
The fourth proportional to 419,963.70, 579,546.99 and 238,661.40 is: 329,351.07
Step by Step Solution
- Step 1: Write the proportion equation
419,963.70 : 579,546.99 = 238,661.40 : x - Step 2: Convert to fraction form
419,963.70/579,546.99 = 238,661.40/x - Step 3: Cross multiply
419,963.70x = 579,546.99 × 238,661.40 - Step 4: Simplify right side
419,963.70x = 138,315,495,999.19 - Step 5: Solve for x
x = 138,315,495,999.19/419,963.70 - Step 6: Final answer
x = 329,351.07
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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.