Finding the Fourth Proportional to 330,136.98, 493,749.97 and 287,395.71
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Solution
The fourth proportional to 330,136.98, 493,749.97 and 287,395.71 is: 429,826.50
Step by Step Solution
- Step 1: Write the proportion equation
330,136.98 : 493,749.97 = 287,395.71 : x - Step 2: Convert to fraction form
330,136.98/493,749.97 = 287,395.71/x - Step 3: Cross multiply
330,136.98x = 493,749.97 × 287,395.71 - Step 4: Simplify right side
330,136.98x = 141,901,620,620.58 - Step 5: Solve for x
x = 141,901,620,620.58/330,136.98 - Step 6: Final answer
x = 429,826.50
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1.5x scale
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.