Finding the Fourth Proportional to 243,393.60, 335,883.16 and 135,963.63
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Solution
The fourth proportional to 243,393.60, 335,883.16 and 135,963.63 is: 187,629.80
Step by Step Solution
- Step 1: Write the proportion equation
243,393.60 : 335,883.16 = 135,963.63 : x - Step 2: Convert to fraction form
243,393.60/335,883.16 = 135,963.63/x - Step 3: Cross multiply
243,393.60x = 335,883.16 × 135,963.63 - Step 4: Simplify right side
243,393.60x = 45,667,893,689.47 - Step 5: Solve for x
x = 45,667,893,689.47/243,393.60 - Step 6: Final answer
x = 187,629.80
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1.5x scale
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.