Finding the Fourth Proportional to 276,328.10, 381,305.60 and 155,466.79
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Solution
The fourth proportional to 276,328.10, 381,305.60 and 155,466.79 is: 214,528.88
Step by Step Solution
- Step 1: Write the proportion equation
276,328.10 : 381,305.60 = 155,466.79 : x - Step 2: Convert to fraction form
276,328.10/381,305.60 = 155,466.79/x - Step 3: Cross multiply
276,328.10x = 381,305.60 × 155,466.79 - Step 4: Simplify right side
276,328.10x = 59,280,357,641.02 - Step 5: Solve for x
x = 59,280,357,641.02/276,328.10 - Step 6: Final answer
x = 214,528.88
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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.