Finding the Fourth Proportional to 387,215.12, 580,971.58 and 187,520.14
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Solution
The fourth proportional to 387,215.12, 580,971.58 and 187,520.14 is: 281,352.32
Step by Step Solution
- Step 1: Write the proportion equation
387,215.12 : 580,971.58 = 187,520.14 : x - Step 2: Convert to fraction form
387,215.12/580,971.58 = 187,520.14/x - Step 3: Cross multiply
387,215.12x = 580,971.58 × 187,520.14 - Step 4: Simplify right side
387,215.12x = 108,943,872,017.62 - Step 5: Solve for x
x = 108,943,872,017.62/387,215.12 - Step 6: Final answer
x = 281,352.32
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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.