Finding the Fourth Proportional to 235,681.72, 325,247.62 and 128,258.68
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Solution
The fourth proportional to 235,681.72, 325,247.62 and 128,258.68 is: 177,000.70
Step by Step Solution
- Step 1: Write the proportion equation
235,681.72 : 325,247.62 = 128,258.68 : x - Step 2: Convert to fraction form
235,681.72/325,247.62 = 128,258.68/x - Step 3: Cross multiply
235,681.72x = 325,247.62 × 128,258.68 - Step 4: Simplify right side
235,681.72x = 41,715,830,414.34 - Step 5: Solve for x
x = 41,715,830,414.34/235,681.72 - Step 6: Final answer
x = 177,000.70
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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.