Finding the Fourth Proportional to 292,147.60, 438,216.12 and 81,782.32
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Solution
The fourth proportional to 292,147.60, 438,216.12 and 81,782.32 is: 122,672.00
Step by Step Solution
- Step 1: Write the proportion equation
292,147.60 : 438,216.12 = 81,782.32 : x - Step 2: Convert to fraction form
292,147.60/438,216.12 = 81,782.32/x - Step 3: Cross multiply
292,147.60x = 438,216.12 × 81,782.32 - Step 4: Simplify right side
292,147.60x = 35,838,330,955.00 - Step 5: Solve for x
x = 35,838,330,955.00/292,147.60 - Step 6: Final answer
x = 122,672.00
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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.