Finding the Fourth Proportional to 316,728.48, 436,963.68 and 180,769.92
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Solution
The fourth proportional to 316,728.48, 436,963.68 and 180,769.92 is: 249,393.07
Step by Step Solution
- Step 1: Write the proportion equation
316,728.48 : 436,963.68 = 180,769.92 : x - Step 2: Convert to fraction form
316,728.48/436,963.68 = 180,769.92/x - Step 3: Cross multiply
316,728.48x = 436,963.68 × 180,769.92 - Step 4: Simplify right side
316,728.48x = 78,989,889,476.51 - Step 5: Solve for x
x = 78,989,889,476.51/316,728.48 - Step 6: Final answer
x = 249,393.07
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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.