Finding the Fourth Proportional to 221,489.40, 305,684.58 and 125,977.65
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Solution
The fourth proportional to 221,489.40, 305,684.58 and 125,977.65 is: 173,865.77
Step by Step Solution
- Step 1: Write the proportion equation
221,489.40 : 305,684.58 = 125,977.65 : x - Step 2: Convert to fraction form
221,489.40/305,684.58 = 125,977.65/x - Step 3: Cross multiply
221,489.40x = 305,684.58 × 125,977.65 - Step 4: Simplify right side
221,489.40x = 38,509,425,029.64 - Step 5: Solve for x
x = 38,509,425,029.64/221,489.40 - Step 6: Final answer
x = 173,865.77
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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.