Finding the Fourth Proportional to 276,281.18, 381,290.18 and 155,415.26
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Solution
The fourth proportional to 276,281.18, 381,290.18 and 155,415.26 is: 214,485.52
Step by Step Solution
- Step 1: Write the proportion equation
276,281.18 : 381,290.18 = 155,415.26 : x - Step 2: Convert to fraction form
276,281.18/381,290.18 = 155,415.26/x - Step 3: Cross multiply
276,281.18x = 381,290.18 × 155,415.26 - Step 4: Simplify right side
276,281.18x = 59,258,313,510.51 - Step 5: Solve for x
x = 59,258,313,510.51/276,281.18 - Step 6: Final answer
x = 214,485.52
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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.