Finding the Fourth Proportional to 292,235.40, 438,320.70 and 81,894.60
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Solution
The fourth proportional to 292,235.40, 438,320.70 and 81,894.60 is: 122,832.82
Step by Step Solution
- Step 1: Write the proportion equation
292,235.40 : 438,320.70 = 81,894.60 : x - Step 2: Convert to fraction form
292,235.40/438,320.70 = 81,894.60/x - Step 3: Cross multiply
292,235.40x = 438,320.70 × 81,894.60 - Step 4: Simplify right side
292,235.40x = 35,896,098,398.22 - Step 5: Solve for x
x = 35,896,098,398.22/292,235.40 - Step 6: Final answer
x = 122,832.82
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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.