Finding the Fourth Proportional to 402,641.64, 555,624.09 and 221,318.67
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Solution
The fourth proportional to 402,641.64, 555,624.09 and 221,318.67 is: 305,408.02
Step by Step Solution
- Step 1: Write the proportion equation
402,641.64 : 555,624.09 = 221,318.67 : x - Step 2: Convert to fraction form
402,641.64/555,624.09 = 221,318.67/x - Step 3: Cross multiply
402,641.64x = 555,624.09 × 221,318.67 - Step 4: Simplify right side
402,641.64x = 122,969,984,618.76 - Step 5: Solve for x
x = 122,969,984,618.76/402,641.64 - Step 6: Final answer
x = 305,408.02
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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.