Finding the Fourth Proportional to 201,904.32, 278,102.88 and 153,693.12
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Solution
The fourth proportional to 201,904.32, 278,102.88 and 153,693.12 is: 211,696.80
Step by Step Solution
- Step 1: Write the proportion equation
201,904.32 : 278,102.88 = 153,693.12 : x - Step 2: Convert to fraction form
201,904.32/278,102.88 = 153,693.12/x - Step 3: Cross multiply
201,904.32x = 278,102.88 × 153,693.12 - Step 4: Simplify right side
201,904.32x = 42,742,499,308.19 - Step 5: Solve for x
x = 42,742,499,308.19/201,904.32 - Step 6: Final answer
x = 211,696.80
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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.