Finding the Fourth Proportional to 427,778.08, 642,830.28 and 228,239.44
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Solution
The fourth proportional to 427,778.08, 642,830.28 and 228,239.44 is: 342,979.76
Step by Step Solution
- Step 1: Write the proportion equation
427,778.08 : 642,830.28 = 228,239.44 : x - Step 2: Convert to fraction form
427,778.08/642,830.28 = 228,239.44/x - Step 3: Cross multiply
427,778.08x = 642,830.28 × 228,239.44 - Step 4: Simplify right side
427,778.08x = 146,719,223,122.24 - Step 5: Solve for x
x = 146,719,223,122.24/427,778.08 - Step 6: Final answer
x = 342,979.76
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.