Finding the Fourth Proportional to 420,425.97, 580,201.34 and 239,133.24
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Solution
The fourth proportional to 420,425.97, 580,201.34 and 239,133.24 is: 330,011.55
Step by Step Solution
- Step 1: Write the proportion equation
420,425.97 : 580,201.34 = 239,133.24 : x - Step 2: Convert to fraction form
420,425.97/580,201.34 = 239,133.24/x - Step 3: Cross multiply
420,425.97x = 580,201.34 × 239,133.24 - Step 4: Simplify right side
420,425.97x = 138,745,425,090.88 - Step 5: Solve for x
x = 138,745,425,090.88/420,425.97 - Step 6: Final answer
x = 330,011.55
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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.