Finding the Fourth Proportional to 396,725.13, 547,484.64 and 215,438.62
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Solution
The fourth proportional to 396,725.13, 547,484.64 and 215,438.62 is: 297,307.45
Step by Step Solution
- Step 1: Write the proportion equation
396,725.13 : 547,484.64 = 215,438.62 : x - Step 2: Convert to fraction form
396,725.13/547,484.64 = 215,438.62/x - Step 3: Cross multiply
396,725.13x = 547,484.64 × 215,438.62 - Step 4: Simplify right side
396,725.13x = 117,949,335,312.80 - Step 5: Solve for x
x = 117,949,335,312.80/396,725.13 - Step 6: Final answer
x = 297,307.45
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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.