Finding the Fourth Proportional to 292,929.80, 438,422.70 and 212,739.80
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Solution
The fourth proportional to 292,929.80, 438,422.70 and 212,739.80 is: 318,403.79
Step by Step Solution
- Step 1: Write the proportion equation
292,929.80 : 438,422.70 = 212,739.80 : x - Step 2: Convert to fraction form
292,929.80/438,422.70 = 212,739.80/x - Step 3: Cross multiply
292,929.80x = 438,422.70 × 212,739.80 - Step 4: Simplify right side
292,929.80x = 93,269,957,513.46 - Step 5: Solve for x
x = 93,269,957,513.46/292,929.80 - Step 6: Final answer
x = 318,403.79
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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.