Finding the Fourth Proportional to 280,442.39, 386,992.49 and 153,117.68
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Solution
The fourth proportional to 280,442.39, 386,992.49 and 153,117.68 is: 211,292.56
Step by Step Solution
- Step 1: Write the proportion equation
280,442.39 : 386,992.49 = 153,117.68 : x - Step 2: Convert to fraction form
280,442.39/386,992.49 = 153,117.68/x - Step 3: Cross multiply
280,442.39x = 386,992.49 × 153,117.68 - Step 4: Simplify right side
280,442.39x = 59,255,389,545.67 - Step 5: Solve for x
x = 59,255,389,545.67/280,442.39 - Step 6: Final answer
x = 211,292.56
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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.