Finding the Fourth Proportional to 292,605.20, 438,907.80 and 213,873.20
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Solution
The fourth proportional to 292,605.20, 438,907.80 and 213,873.20 is: 320,809.80
Step by Step Solution
- Step 1: Write the proportion equation
292,605.20 : 438,907.80 = 213,873.20 : x - Step 2: Convert to fraction form
292,605.20/438,907.80 = 213,873.20/x - Step 3: Cross multiply
292,605.20x = 438,907.80 × 213,873.20 - Step 4: Simplify right side
292,605.20x = 93,870,615,690.96 - Step 5: Solve for x
x = 93,870,615,690.96/292,605.20 - Step 6: Final answer
x = 320,809.80
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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.