Finding the Fourth Proportional to 276,022.12, 380,802.48 and 155,135.80
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Solution
The fourth proportional to 276,022.12, 380,802.48 and 155,135.80 is: 214,026.68
Step by Step Solution
- Step 1: Write the proportion equation
276,022.12 : 380,802.48 = 155,135.80 : x - Step 2: Convert to fraction form
276,022.12/380,802.48 = 155,135.80/x - Step 3: Cross multiply
276,022.12x = 380,802.48 × 155,135.80 - Step 4: Simplify right side
276,022.12x = 59,076,097,376.78 - Step 5: Solve for x
x = 59,076,097,376.78/276,022.12 - Step 6: Final answer
x = 214,026.68
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1.5x scale
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.