Finding the Fourth Proportional to 357,704.13, 493,138.45 and 285,352.59
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Solution
The fourth proportional to 357,704.13, 493,138.45 and 285,352.59 is: 393,393.09
Step by Step Solution
- Step 1: Write the proportion equation
357,704.13 : 493,138.45 = 285,352.59 : x - Step 2: Convert to fraction form
357,704.13/493,138.45 = 285,352.59/x - Step 3: Cross multiply
357,704.13x = 493,138.45 × 285,352.59 - Step 4: Simplify right side
357,704.13x = 140,718,332,962.97 - Step 5: Solve for x
x = 140,718,332,962.97/357,704.13 - Step 6: Final answer
x = 393,393.09
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1.5x scale
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.