Finding the Fourth Proportional to 354,436.05, 489,159.68 and 216,695.79
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Solution
The fourth proportional to 354,436.05, 489,159.68 and 216,695.79 is: 299,063.37
Step by Step Solution
- Step 1: Write the proportion equation
354,436.05 : 489,159.68 = 216,695.79 : x - Step 2: Convert to fraction form
354,436.05/489,159.68 = 216,695.79/x - Step 3: Cross multiply
354,436.05x = 489,159.68 × 216,695.79 - Step 4: Simplify right side
354,436.05x = 105,998,842,210.27 - Step 5: Solve for x
x = 105,998,842,210.27/354,436.05 - Step 6: Final answer
x = 299,063.37
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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.