Finding the Fourth Proportional to 292,143.36, 438,240.54 and 81,781.90
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Solution
The fourth proportional to 292,143.36, 438,240.54 and 81,781.90 is: 122,679.99
Step by Step Solution
- Step 1: Write the proportion equation
292,143.36 : 438,240.54 = 81,781.90 : x - Step 2: Convert to fraction form
292,143.36/438,240.54 = 81,781.90/x - Step 3: Cross multiply
292,143.36x = 438,240.54 × 81,781.90 - Step 4: Simplify right side
292,143.36x = 35,840,144,018.23 - Step 5: Solve for x
x = 35,840,144,018.23/292,143.36 - Step 6: Final answer
x = 122,679.99
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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.