Finding the Fourth Proportional to 420,899.40, 580,697.10 and 239,565.96
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Solution
The fourth proportional to 420,899.40, 580,697.10 and 239,565.96 is: 330,519.02
Step by Step Solution
- Step 1: Write the proportion equation
420,899.40 : 580,697.10 = 239,565.96 : x - Step 2: Convert to fraction form
420,899.40/580,697.10 = 239,565.96/x - Step 3: Cross multiply
420,899.40x = 580,697.10 × 239,565.96 - Step 4: Simplify right side
420,899.40x = 139,115,258,230.72 - Step 5: Solve for x
x = 139,115,258,230.72/420,899.40 - Step 6: Final answer
x = 330,519.02
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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.