Finding the Fourth Proportional to 221,998.79, 306,352.10 and 121,394.63
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Solution
The fourth proportional to 221,998.79, 306,352.10 and 121,394.63 is: 167,521.18
Step by Step Solution
- Step 1: Write the proportion equation
221,998.79 : 306,352.10 = 121,394.63 : x - Step 2: Convert to fraction form
221,998.79/306,352.10 = 121,394.63/x - Step 3: Cross multiply
221,998.79x = 306,352.10 × 121,394.63 - Step 4: Simplify right side
221,998.79x = 37,189,498,600.95 - Step 5: Solve for x
x = 37,189,498,600.95/221,998.79 - Step 6: Final answer
x = 167,521.18
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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.