Finding the Fourth Proportional to 239,090.40, 358,623.36 and 81,321.84
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Solution
The fourth proportional to 239,090.40, 358,623.36 and 81,321.84 is: 121,978.60
Step by Step Solution
- Step 1: Write the proportion equation
239,090.40 : 358,623.36 = 81,321.84 : x - Step 2: Convert to fraction form
239,090.40/358,623.36 = 81,321.84/x - Step 3: Cross multiply
239,090.40x = 358,623.36 × 81,321.84 - Step 4: Simplify right side
239,090.40x = 29,163,911,502.18 - Step 5: Solve for x
x = 29,163,911,502.18/239,090.40 - Step 6: Final answer
x = 121,978.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.