Finding the Fourth Proportional to 316,915.95, 437,344.41 and 171,721.63
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Solution
The fourth proportional to 316,915.95, 437,344.41 and 171,721.63 is: 236,976.07
Step by Step Solution
- Step 1: Write the proportion equation
316,915.95 : 437,344.41 = 171,721.63 : x - Step 2: Convert to fraction form
316,915.95/437,344.41 = 171,721.63/x - Step 3: Cross multiply
316,915.95x = 437,344.41 × 171,721.63 - Step 4: Simplify right side
316,915.95x = 75,101,494,956.59 - Step 5: Solve for x
x = 75,101,494,956.59/316,915.95 - Step 6: Final answer
x = 236,976.07
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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.