Finding the Fourth Proportional to 438,967.60, 605,743.86 and 257,686.92
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Solution
The fourth proportional to 438,967.60, 605,743.86 and 257,686.92 is: 355,589.50
Step by Step Solution
- Step 1: Write the proportion equation
438,967.60 : 605,743.86 = 257,686.92 : x - Step 2: Convert to fraction form
438,967.60/605,743.86 = 257,686.92/x - Step 3: Cross multiply
438,967.60x = 605,743.86 × 257,686.92 - Step 4: Simplify right side
438,967.60x = 156,092,269,592.31 - Step 5: Solve for x
x = 156,092,269,592.31/438,967.60 - Step 6: Final answer
x = 355,589.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.