Finding the Fourth Proportional to 399,041.69, 550,676.79 and 217,753.79
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Solution
The fourth proportional to 399,041.69, 550,676.79 and 217,753.79 is: 300,499.82
Step by Step Solution
- Step 1: Write the proportion equation
399,041.69 : 550,676.79 = 217,753.79 : x - Step 2: Convert to fraction form
399,041.69/550,676.79 = 217,753.79/x - Step 3: Cross multiply
399,041.69x = 550,676.79 × 217,753.79 - Step 4: Simplify right side
399,041.69x = 119,911,955,334.15 - Step 5: Solve for x
x = 119,911,955,334.15/399,041.69 - Step 6: Final answer
x = 300,499.82
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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.