Finding the Fourth Proportional to 280,764.84, 387,455.67 and 153,440.43
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Solution
The fourth proportional to 280,764.84, 387,455.67 and 153,440.43 is: 211,747.90
Step by Step Solution
- Step 1: Write the proportion equation
280,764.84 : 387,455.67 = 153,440.43 : x - Step 2: Convert to fraction form
280,764.84/387,455.67 = 153,440.43/x - Step 3: Cross multiply
280,764.84x = 387,455.67 × 153,440.43 - Step 4: Simplify right side
280,764.84x = 59,451,364,610.74 - Step 5: Solve for x
x = 59,451,364,610.74/280,764.84 - Step 6: Final answer
x = 211,747.90
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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.