Finding the Fourth Proportional to 286,706.76, 395,679.27 and 159,394.20
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Solution
The fourth proportional to 286,706.76, 395,679.27 and 159,394.20 is: 219,977.31
Step by Step Solution
- Step 1: Write the proportion equation
286,706.76 : 395,679.27 = 159,394.20 : x - Step 2: Convert to fraction form
286,706.76/395,679.27 = 159,394.20/x - Step 3: Cross multiply
286,706.76x = 395,679.27 × 159,394.20 - Step 4: Simplify right side
286,706.76x = 63,068,980,698.23 - Step 5: Solve for x
x = 63,068,980,698.23/286,706.76 - Step 6: Final answer
x = 219,977.31
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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.