Finding the Fourth Proportional to 221,973.57, 306,251.01 and 135,842.85
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Solution
The fourth proportional to 221,973.57, 306,251.01 and 135,842.85 is: 187,418.75
Step by Step Solution
- Step 1: Write the proportion equation
221,973.57 : 306,251.01 = 135,842.85 : x - Step 2: Convert to fraction form
221,973.57/306,251.01 = 135,842.85/x - Step 3: Cross multiply
221,973.57x = 306,251.01 × 135,842.85 - Step 4: Simplify right side
221,973.57x = 41,602,010,013.78 - Step 5: Solve for x
x = 41,602,010,013.78/221,973.57 - Step 6: Final answer
x = 187,418.75
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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.