Finding the Fourth Proportional to 408,069.21, 612,207.50 and 239,731.86
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Solution
The fourth proportional to 408,069.21, 612,207.50 and 239,731.86 is: 359,658.70
Step by Step Solution
- Step 1: Write the proportion equation
408,069.21 : 612,207.50 = 239,731.86 : x - Step 2: Convert to fraction form
408,069.21/612,207.50 = 239,731.86/x - Step 3: Cross multiply
408,069.21x = 612,207.50 × 239,731.86 - Step 4: Simplify right side
408,069.21x = 146,765,641,482.29 - Step 5: Solve for x
x = 146,765,641,482.29/408,069.21 - Step 6: Final answer
x = 359,658.70
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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.