Finding the Fourth Proportional to 398,286.21, 549,838.11 and 269,902.93
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Solution
The fourth proportional to 398,286.21, 549,838.11 and 269,902.93 is: 372,603.70
Step by Step Solution
- Step 1: Write the proportion equation
398,286.21 : 549,838.11 = 269,902.93 : x - Step 2: Convert to fraction form
398,286.21/549,838.11 = 269,902.93/x - Step 3: Cross multiply
398,286.21x = 549,838.11 × 269,902.93 - Step 4: Simplify right side
398,286.21x = 148,402,915,565.15 - Step 5: Solve for x
x = 148,402,915,565.15/398,286.21 - Step 6: Final answer
x = 372,603.70
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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.